The comment is based more on the perception of these players that the media paints rather than calling people racist. I think McDermott and Parker are extremely similar players. Yet Parker is painted as the next Melo or Pierce and MeDermott the next Kyle Korver. Just think McDermott's game is closer to that of Parker and the manner in which many, including the media, compares players based first and foremost on skin color, paints an unfair picture of McDermott's game.
I agree that their games are somewhat similar, and a lot of people wouldn't make that connection due to visible differences, but McDermott's also like 3 years older than Parker and wasn't nearly as highly regarded in high school, being overshadowed by Harrison Barnes. Plus there's the stat inflation issue of playing for his dad.
I don't see them as all that similar at all beyond the broadest of strokes.
Both are scorers who are pretty good but not great facilitators.
McDermott is a shooter who can hit from anywhere on the court and is comfortable running off screens for deep catch and shoot jumpers Ray Allen style. When he's not doing that he has to post up to create offense because he's very limited off the bounce. No matter where he is on the court he can't attack the rim, instead he uses nice body control for hooks and nifty layups.
Parker is also a good post player and scorer, but he's at his best off the bounce and handling the ball. His jumper is very shaky and certainly isn't comfortable coming off screens to use it. He can post up but he's not very skilled with it yet and typically only does it when he has a mismatch.
Neither can defend a chair, McDermott is better than Parker but I chalk that up to playing 4 years in his Dad's system more than any better acumen.