The biggest problem "MMAers" have when wrestling is they instinctively go to their back when placed in predicament as they attempt to go to the "guard" to avoid rear chokes. When they do that, they usually get pinned. I have had a lot of high school kids who had some MMA training and they got pinned alot. They were decent on their feet but once the got taken down, they would usually go to their back and the ... lady sang.
However, we are talking about GSP and he is a World Class Athlete and Grappler and could probably make the adjustments easier than most would think. Plus, we are also talking about Canada. I would think that he could make Cananda's team. If we were talking about making America's team he wouldn't have a chance and would probably not even be in the top ten. So is his dream to wrestle in the Olympics, or is it to place or medal?