I just think some of you are underrating how hard it is to be a front line starter in this league.
Now, I should say, I think on the right team, Davis could be the starter on a championship level team. For example, I think if you put him on the Heat next year as a starter, he might do a heck of a job, and they would have a great chance at winning it all. He would compliment the other starters, and fill the role nicely.
However, if anyone is expecting him to turn into an impact starter on a good team. Meaning, someone who is actually a target for defenses, rather than just someone who takes advantage of the attention defenses pay to everyone else, then I think you are underestimating how difficult that is in this league.