It's hard to judge exact specs from pictures , having cut one of warners bats at the kent warm up game it was dry as f';k prob and about 8% moisture ,also shorter handle and at a guess about 2.11 . Plus gn aus prob get 150000 + clefts a year so with that volume you will get a share of super light clefts , Or gn aus have super light handle technology
I can do a 50mm edge bat at 2.13/14 but it will be concaved a lot and a thin handle . Just watching khawaja bat , the bat he's using looks like a standard gn , the big bash would have been prob 2-3 ounces heavier