I can flip switch this logic and say why do people assume, that the way Federer played at AO before 2008 would help him beat PEAK Djokovic, which didn't happen until 2011?? Until 2008 Djokovic was only improving, while Federer already playing in his peak and close to drop in form! Don't you think it's only natural for a top-form player at the time like Federer to be able to beat only improving like Djokovic? If you want any indication on how majority of matches at AO would conclude between the two, then look no further than 2011 season, aka Djokovic's peak form season and Federer's close to peak-form! Two of their particular grand slam semis encounters that year is a clear evidence of that! Close to peak form Federer defeated close to peak Djokovic (i think he still could play better in that semis, just missed the mark...) in RG semis, then peak Djokovic defeated close to peak Federer in semi-final epic later at the US Open! There is no reason to suggest Djokovic couldn't have done the same at AO on old surface playing in his peak form...this is just silly assumtpion...Plus don't forget it's not just court speed, that makes Djokovic play so well there! There are other factors, like overall conditions (which include everything outside and inside factors - from weather and climate to organization efforts and small moments like that..., local fan group support giving huge boost in confidence and so on...) It's not just about court speed! Borg dominated Wimbledon, because he liked atmosphere, his tennis was most defensive with attacks from both wings gaining great angular momentum! What made him 5 consecutive WImbledon champion is well...because he loved Wimbledon and everything about it! For that same reason, he was quite poor grass courter outside of it...