Better Legacy - Coleman
Better Fighter - Arlovski
Coleman is one of the weirdest fighters to quantify. Very high highs and Very low lows. He was a UFC champion, a two time tournament winner, a pride grand prix winner, and invented fucking ground and pound. No one can take that away from him.
But no one looked worse in defeat. There were a countless number of instances where he would gas terribly (and early) and just get destroyed. He lost four straight fights in his prime (though one is heavily rumored to be a work). And the dirty little secret on him is that he was terrible post 2001.