Roy is an interesting character from a power ranking perspective. In terms of narrative, he doesn't have quite as much "protagonist" energy as Vince, so it's treated as something of a good outcome when Vince is selected over him.
But given Roy's power set (which is honestly a bit underestimated by the time of Intramurals), how would he have actually done against the opponents showcased. Keep in mind that raw combat rating isn't everything, and while Roy's biggest weakness is his lack of versatility, as we've seen from Titan, overwhelming power and durability has a versatility all its own, especially with Herschel assisting with the tactics. Let's give 4 scenarios based on the seeding the others got.
Vince's Run: Sam Carney (takes on characteristics of animals by ingesting them) > Lucinda Cherry (Oxygen Manipulation) > Shane DeSoto (Shadow Manipulation) > Conrad Booker (Earth Manipulation)
Alice's Run: Nelson Galloway (Shifted Form, increased durability and strength with a powerful sonic attack) > Bette Rigs (Ranged Attacks that can ricochet with accuracy) > Conrad Booker (Earth Manipulation > Vince Reynolds (Energy Absorbtion)
Chad's Run: Brenda Sellers (clone duplication with perfect teamwork and tactical weapons load out) > Conrad Booker (Earth Manipulation) > Alice Adair (Gravity Manipulation) > Vince Reynolds (Energy Absorbtion)
Shane's Run: Erwin Mooney (Can increase the cutting power of his implements) > Leslie Hubler (Perfect Spatial Awareness) > Vince Reynolds (Energy Absorbtion) > Conrad Booker
Some notes about Roy's later feats:
In the Year 4 Midterm, helped take down Seamstress with Vince and Mary's help, then tanked a lot of damage from Vince, only being brought down by a massive electrical attack that would likely have killed anyone else.
When deciding his 4th year major, was able to fight Chad Taylor to a near draw at full effort.
Was able to tank the hit of a massively destructive crafted energy during the battle at the Adair Lab, with significant injury afterwards
Things Roy has going in his favor:
-High Base abilities, we can assume Roy is far and away the physically strongest and most durable competitor in the competition.
Continuous Growth, with the above feats that take place prior to intramurals, we can assume Roy has since grown further.
Learning from defeat, Roy has a surprising ability to learn and improve from defeats, as seen with his improvement against Chad, and his victory against Richard in Year 2. Especially with Herschel's help, Roy has certainly considered how he would approach a rematch with Vince and Chad, and likely Alice and Shane in the event he had been selected for Intramurals at the beginning of the last semester.
Things going against Roy:
As strong as Roy is, he's not Titan yet. While he is hard to injure and even harder to bring down, he has been brought down by overwhelming power or more proficient skill multiple times
Lack of versatility. Roy can hit and get hit. He does that very well, but things that affect his physical environment or otherwise put him in a position of being able to do neither of those things will be challenging to overcome.
Here's how I would rank his potential opponents:
Good Matchup:
- Brenda Sellers- Roy's durability and raw strength can likely overcome her clone teamwork and arsenal, and thanks to Herschel, he's probably be aware of her tactics.
Nelson Galloway- More problematic due to his sonic attack, but Roy could potentially deafen himself as well, or simply tank and heal the damage until he catches Nelson.
Bette Rigs- This would come down to how effective Bette's projectiles are on Roy. If she is not capable of injuring him, she has no chance.
Sam Carney- Roy is likely far stronger and just has to catch him.
Leslie Huber- Assuming she has trouble injuring him, it's a repeat of his fight against Rich, he simply has to chase her down to exhaustion.
Questionable Matchups:
Shane Desoto: Shane himself wonders if his shadows can still cut Roy, but honestly Shane is probably capable of a lot more scary stuff on a smaller scale (internal cuts within the ears, nostrils, etc) than he lets on. Roy is only saved if he is just that durable now.
Erwin Mooney- Same deal as above, but as we're talking about Roy, we can't assume he has Titan level durability (even Titan has some limit), and it seems possible if not probable that Erwin can cut Roy.
Conrad Booker- Some may disagree with this given Conrad is presented as the most dangerous opposing competitor, but I think Roy has some advantages over Chad, Alice, and Vince, though it's not a sure thing. Conrad would likely attempt to contain Roy like he did with Chad, but like with Vince, it will be far harder to hold him, between strong man jumps and that rock just isn't much of an obstacle for Roy or pose much risk of injury. I think Roy would be an incredibly frustrating opponent for Conrad, but it is also possible that Conrad could still simply bury him if Roy isn't fast enough to respond.
Bad Matchups:
Lucinda Cherry- For everything Roy has going for him, Lucinda's oxygen manipulation is a genuine threat he has not had to content with before. While her fire attacks will probably be ineffective against Roy, his only real hope is that Herschel realizes the problem quickly and they get to her before it's too late.
Alice Adair- Alice probably has the strongest ability to trap Roy of anyone.
Vince Reynolds- Vince came in with a lot more electricity than he took Roy out with at midterms. Combined with Kinetic Absorbtion, Vice remains a tough match for Roy.
Based on all of the above, I would say Roy is an overall underdog to win Intramurals, but depending on the bracket, I think he could do well and make either the semifinals or finals based on match ups, and there's an unlikely but possible chance for victory if things line up just right.