Based on what I have seen (and keep in mind it is early) I think Grigorenko would easily be a top 4 pick if this was done over. There were lots of questions about him at the draft but keep in mind he had also just finished battling Mono. Given his start this year and his ability to dominate I have no doubt he would have been top 4. And that is not just based on regular Q play, the guy looked great at the subway series.
Teams questioned his work ethic and from what I can see they were wrong to do so. This guys is packed with skill, size, and a want to win.
Big miss by a lot of teams.
Can't wait to see him at the WJC.