Fantasy Football, did I make the right decision?

I made a bet last year that was quite costly, I had both Miles Austin and Brandon Marshall on my team and I had to give one of them to another owner in my keeper league. Now we only have 2 keepers, and I have Drew Brees so I could have only kept Austin OR Marshall but not both so I decided to give up Marshall. Now, my thinking was Marshall is going to the AFC East, a much more difficult division compared to the AFC West, and has to be on a team with a strong armed, yet still unexperienced Chad Henne at QB and a two-headed monster at RB (Ronnie and Ricky) to compete with for touches. I think Austin will again be a beast, but I know Dez Bryant, Jason Witten and Felix Jones will compete for touches and that now the whole league knows about Austin and that he isn't a secret anymore. I still feel good about my decision but what do you guys think? Who'll be better, B-Marsh or Miles?