you can reasonably assume parker is clearly ahead of wiggins when it comes to scoring. both wiggins and parker was limited by college rules, defense, and the way teams play. this applies to both.
i see many automatically assume wiggins and parker have somewhat 'similar' stats. just a 2pt difference and that's only because parker shot more and he was a featured as #1 option more. but in reality, parker scored 2 more points than wiggins and he avg 2 min less. and when you do per 40, it really shows up on a stat sheet. so the actual difference is 4.2 which is significant. also parker shot .473% compared to .448%. so offensive production between wiggins and parker are significant.
IMO Parker is good 2 years ahead of wiggins in scoring. not just college scoring. scoring. parker has more moves, better fundamentals, and just has better overall touch so far in their career. also parker has that lead dog mentality. wiggins has shown that too, but i still think he is too passive sometimes.
i expect parker to average more than wiggins in the next level for first 3-4 years. if wiggins really is all that then his should have tmac like statistical jump. that's a big if, but it can happen.