I don't think there is any question that Parker will be a productive NBA player. He's NBA ready and could average 20 PPG as a rookie. The guy can just flat out score any way he wants. That said, he's Carmelo Anthony down to the same flaws and everything. Can play the 3 or 4, isn't very good on defense, scores in a variety of ways with ease, questionable shot selection. Every sign points to him being a good scorer at worst at the NBA level. I'd probably pick Wiggins over Parker because he has more potential to be an all-around great player, but I'd be more than happy getting a player of Parker's caliber at #2.
I wrote a full, in-depth scouting report on Parker with stats, strengths and weaknesses, and NBA comparisons here at:
http://freeagentzero.com/2014/06/20/nba ... ri-parker/. Also, there are other scouting reports elsewhere on the site.