I don't see many similarities. Even as a rookie Smart was a much better defender, and Smart makes lots of winning plays (steals, blocks, diving for loose balls) that Semi does not make. Smart impacts winning in many ways that Semi simply does not. As far as offense goes, we all know that Smart is a bad shooter, even so he is better than Semi. Their percentages are relatively close, but Marcus is taking more difficult shots, Semi usually only takes wide open looks. Even comparing rookie numbers, Smart was better. Moreover, this is all before we take into account that Smart is a good ball handler, passer, and can run the offense. Semi literally adds almost nothing on offense. I think that even if you only compare rookie numbers, there is no question that Smart was the far superior player.