I guarantee there is no power difference besides the difference you will get when you go to an open pattern. From what I am seeing, the Blade is the exact same as last one except they have 2 patterns. The Wilson QC is all over the place and that is why the numbers are a little off from each other. So Jason had one that whipped through the air faster, but I bet we could easily find him an open pattern stick with worse QC that is sluggish.
Please help TT Member BruceD get a wheelchair so he can play tennis again - http://tt.tennis-warehouse.com/showthread.php?t=496820