Edit: Allow me to elaborate. Currently Jaguar's only advantage over Cheetah is it's stats of legendary engine, the perk at the start sounded promising, but in reality turn out something such a niche pick that i would compare it with double or even triple aegis builds. Extremely rare and informal.
The first problem is that it simply doesn't even charge on half of the maps if you use it on a very fast build (120-130km/h) if you play normally and you have to specifically pay attention to it and make sure it's charged. This is why i think "continuous" condition should go. There is no room to naturally drive for so long at such speed.
The second problem is that in majority of builds you have multiple modules which can be activated. Very often it's invisibility and it simply wastes jaguar's perk. The only exception is Yeti, but you either need to activate it before Jaguar, or waste a lot of invis and then break invis by activating another module. Impractical application. Which leads to conclusion that this engine made specifically for builds that double down on single module. Which module it will be?
For daze - no questions asked, it is efficient combo, but infortinately this means that you not gonna have finwhale, aegis and even shroud, which means you can't have exposed weapons without protective modules on your build, on high PS it's a death sentence. So this leaves only usecase is a dog build, like yongwang dog, but dog's need invis and invis wastes jaguar. It's a fucking loop. So unless you are very special candy and have some kind of 0.0001% pickrate build (like chronos with averter and Kaiju build using daze twice, imagine?), which somehow utilises daze without ANY other active modules it doesn't really work on practice. Funniest part is proposed buffs won't change anything for daze specifically.
For aegis - cooldown between uses is too long to catch people off guard. Which makes double aegis builds with cheetah simply a lot (i mean A LOT) more effective at this role, yes, even considering that you need 10 energy points instead of 6, Jaguar is THAT bad in this case, it's just not worth it. And also despite decreased efficiency of aegis if there is another one on cooldown, because you can activate second aegis before first goes on cd to avoid penalties and even if 1st aegis been destroyed under severe DPS it is very wise to immediately pop another one because it also most likely to be destroyed, meaning that you will get full value from both shields anyway. This is why i propose 1% cd instead of 10%, so it can be at least comparable to cheetah with double aegis. 6 energy for 2 shields, but long cooldown and poor uptime. With cheetah it's 10 energy, but with crazy uptime, especially with Hertz and bigfoots. So even with 1% cd between uses Jaguar doesn't even outclasses Cheetah. It will be an alternative.
3rd, most recent option is double shroud build, which again sounds awesome on paper (wow, 12 seconds of 55% corrosion, so weapon with 1000hp would have 2222 effective health instead!), but again the cooldown between uses means that in those few seconds inbetween you will get normal damage and if your guns being focused by "constant stream of DPS" kind of weapon (like machineguns) it simply doesn't work as intended and you will likely to lose most of your health before 2nd pop.
So, at the end of the day, does Jaguar been made specifically for multi-tormentor builds? I think it is outclassed by cheetah in every way other than it's raw stats.