Should I make this trade in Fantasy Football?

I love Calvin Johnson but I wouldn't do it. Ray Rice & the Ravens have the easiest schedule in the league from here on out and he should put up big points from now on. Best started out great but he gets hurt to easily so they are giving away carries to Smith to keep him healthy. Pierre Thomas just got off crutches this week so there is no telling when or if he will be back at all. The only way I would consider it is if you do not play in a PPR league, taking away Rice's catches out of the backfield evens out the trade a little bit.