Because it's Dynasty I have to say Wallace. I like Garcon as the better receiver with the better QB, but for dynasty, Wallace has more room for improvement.
10 Team; 1QB/2RB/2WR/1Flex/1K/1D; Standard; Non-ppr
QB: Vick, Orton
RB: Forte, Bradshaw, Addai, Lynch
WR: D.Jackson, S.Smith(Car), Garcon, Bess, Blair White
D: Phi, Ari