It's hard to gauge Murray's level right now, given he hasn't faced anyone in the top 20 and generally raises his game against the better opponents. Novak on the other hand is clearly playing to a high level already.
Last two Anvak finals have gone the way of the most rested though. I wonder, if this match goes five, if Djokovic will start to feel the burn..
Anvak? That the new supercouple name?