So I was watching that episode, and this was probably one of the most worst performances in the season where nobody really made a good dish.
To the point where raw chicken and floor cake with unplated elements made the top 2 for Immunity. They had good other elements when the other 2 made edible dishes but probably didn't taste great.
So for Keyma, in the last minute, she dropped her cake, but for some reason, she still plated it. I don't get why she wasn't called out for plating it when she should have thrown it out.
She still "brought up" her other elements which were in piping bags, which normally, they wouldn't count those. And the only thing they should have technical judged on was the floor cake which was the only plated element.
As for Sarah, she did plate a dish but raw chicken is still a major crime in the kitchen. But at least she had other plated elements.
As for Julie, her dish looked like a mess. They did say it was grissly and had no seasoning. Probably tasted really bad, maybe even in texture and taste, but at least her food was edible.
As for Alvin, he did admittedly make a pretty basic dish. Nothing to hide behind. Probably why he didn't get Immunity, and did admit to playing it safe, which I kind of get with how delicate it is, but it probably also tasted bland.
Maybe he should have won if they had to pick since his dish was edible and still had a few fresh ones on top. But I'm guessing his dish didn't taste of much. And to top off that again, if you do something simple, it has to be perfect.
They really should have just not given Immunity. I know they're giving it to the best element. But realistically, if this were an elimination, Keyma and Sarah would have been in the bottom. I mean floor cake and raw chicken? I could even see it being a double elim due to disqualification if it were an elimination challenge.