One interesting thing is some people have wondered if Rose is playing too many minutes and is hitting the rookie wall by being worn out. Mayo plays heavy minutes too but I haven't seen Grizzlies fans voice concern for Mayo possibly hitting a wall.
He is being asked to score alot and since he is the 2guard, he gets his opportunities to make the decision whether or not to shoot it.
No he's not, he isn't the offensive focal point of his team. Rudy Gay is the offensive focal point of that team, Mayo is the second option. He is also splitting time at PG and SG.