Edges and Toe are larger on the Keeley so I dont think the rule has anything to do with it. Middle also looks slightly lower.
I don't think you had an actual Warner Kaboom in that case, maybe just the model, but not the actual replica? He used to use absolutely huge bats back when he was with GN from memory, and that was pre-gauge era, albeit with a small stretch between October 2017-sandpaper gate where he'll have used gauge compliant GN bats.
Gorgeous shape - not far off their Sehwag shape actually - they do make for a fair few players, so no surprise some use very similar profiles. Gotta dig mine out for a little photoshoot...