NBA refs are IMO (with a few exceptions) far superior and much more consistent than your typical NCAA ref.
As far as overlooking traveling, yes that can be an issue at times for the NBA. But I would submit as a counter that 1.) it's actually harder to travel than many people assume, especially if players use a proper jump-stop and 2.) NCAA refs often call players for traveling which actually isn't (when you slow it down and look at the pivot in relation to what's happening with the ball.) It seems anything that looks rushed or awkward in any way is called a travel by default.
I respect you and your knowledge of basketball, but I couldn't disagree more, especially about the consistency of NBA officials. The "star" system" is in full effect in the NBA and certain players are rarely called for anything. James Harden is an example; walks on a LOT of his drives to the basket and often throws himself into the defender on shot attempts which is one reason why he is at or near the top of the league in FT attempts yearly. I guess we will agree to disagree here!
Great site by the way, and thanks for doing it!