Bad folds or good folds?

[sirpupnyc]

100+9 OSOP MTT on Pokerroom.

25-50 blinds (I think), AKo in EMP. I raise to 400, one caller. Flop 656 (rainbow, I think), I bet 400, get raised almost enough to put me all-in. Villain has me covered. I figure he has a pair, or at best for me AK (though not long before he showed 2c-4c on a hand he played all the way to the river with nothing). So I need to catch an A or K, maybe even both of one or the other if he has a 6 or 55. This is no place to play for all my chips, right?

A little later it's 50-100, 88 MP, raise to 400, big stack goes all-in. With no sense of whether he'd push on a bluff or whether he has a real hand, can I call all my chips? I figured I was either badly beat or 50/50 at best.

I know there's no winning tourneys without getting into races and having the cards fall your way, but neither of these smelled like a situation where I was going to come out on top. Was I still wrong to fold, or do you have to go with that sense?

(The sad ending to the story: halfway through the second hour I got KK with my stack too short to impress anybody, got called by A6o and he caught 4 hearts to go with his A.)