Gonzalez does have a bigger wind up but watch it when he comes through the elbow is tucked in that is something I teach and is technically correct. Federer doesn't keep that elbow tucked in on the back swing or follow through. His swing is alittle smaller but not compact, I call lendl/ Sampras forehand compact. You see gonzalez has a much higher follow through then federer sorry I have to disagree with you there. As long as you say federer's forehand isn't the best ever we can agree