The hard thing for me is, when Martinez is actually decisive and doesn't seem to be playing scared, he unquestionably throws a better ball than McCaffrey. Doesn't take much scouting to see Martinez is a better passer.
The problem is, Martinez's accuracy even in short passes seems to be gone. I don't know if he's thinking too much, playing scared, whatever, but he can't seem to make the basic throws right now, and his arm is his main advantage over McCaffrey. The offense also seems to move with more purpose under McCaffrey and he just seems to be able to manage it better. I don't think McCaffrey has the arm to be an NFL QB, but he works in our offense. Warner should have caught that end zone pass but MAN was that an ugly throw and I can understand why it was hard to catch.
I see McCaffrey in kind of a TMart mold as far as his style of play, probably a slightly better passer and not quite as fast as far as straight line speed goes. He's electric when he's on the field, though he's more of an athlete playing QB.