re: How did the Indy Punt returner have possession but Dez Bryant didn't?

I obviously understand they're on different types of plays, I just don't understand why one of them had possession but the other didn't when they are both catching the ball. I'm biased, and it's just my opinion, but I thought Dez had control for a longer period of time than Cribbs did and I don't understand why they wouldn't be called the same.

I've also said previously that I think the refs got the call correct earlier according to the rules if 3 steps isn't a football move. I just don't understand why the rules for returning punts and catching passes are different as far as establishing possession.