Australian Open has always been a slow hard court, even in eras where the courts played differently
Agassi and Courier dominated there, Sampras was just weird there despite being one of the top 3 hard court players in history
Federer is also nowhere near as good at Australian Open as he is at Wimbledon or Us Open. there's a reason most of his wins came in 2007 or earlier when it was faster
same for Nadal also, despite being great at Miami and Indian Wells, is awful at AO
it's just a very weird slam, always has been
personally, I would rather see Wimbledon and Us Open sped up before AO
You go around making these claims but in terms of results, this is RF's best slam consistency wise (10 straight years with SFs if he makes the SF in 2013). He's won 4 times and lost one final compared to winning 5 times and losing one final at the USO. Not that much of a difference.