Udonis Haslem is a role player and never has been more than that. Antoine Walker has always been a good all around player. You cant compare the two players other than they both play PF.
No one in their right basketball mind can question whether Toine was ever "good". He was very talented player in this league for quite a while and his career was ruined because he was the first piece of a rebuilding franchise. He never had a veteran to take him under his wing. Toine was forced to grow up too quick and it hurt him in the long run.
It could also be argued that he never grew up as a player or a professional and that's why he fell in love with inefficiently shooting 3's, never working on his game or conditioning in the off season, and ignoring what some coaches told him to do on the court.
As for the "he was playing so many minutes he had to recover in the off season" remark your do realize that out of the 8 seasons Antoine played here he only average over 36.9 MPG in half those seasons. Here are his MPG averages for the seasons he was here in consecutive order:
36.2, 39.9, 36.9, 36.6, 41.9, 42, 41.5, 34.5.
As a comparison and maybe this isn't fair but Larry Bird every single off season of his career came back into camp having worked on something new and bettered his game every year. His MPG averages in consecutive order his first 8 years:
36, 39.5, 38, 37.7, 38.3, 39.5, 38, 40.6.
Not really all that different. but in those eight seasons Bird also averaged playing 16 playoff games per year and averaged over 40 MPG in every single playoff season he was in. Yet somehow he didn't have to recover from the beating he took because a week after the season ended he was working on perfecting his free throws one season and extending his range another season, and perfecting his left hand shots in the lane another and developing a new post move another year. he got better every year because he was mature and driven and professional.
So Larry averaged having longer seasons, shorter off seasons and yet didn't have to rest because of the beatings he took in a possibly more physical league. But he came back better every year.
What exactly was Walker's excuse again?