It's impossible to compare different eras of players. Murray lovers say if he'd played in any other era he'd have won more, it's impossible to say, the Andy Murray that plays today might have but Andy Murray in 1985 wouldn't have had access to all the things Andy Murray in 2013 has to improve his fitness and ability. Same as if you took Bjon Borg and gave him all the things Murray has access to today, of course he'd be fitter, stronger,better because the training, diet, technology and sports science today is far better than when he played.