I was including STAB too, so 1.5*1.5 = 2.25, or am I forgetting something?
Oh, you're right actually. It is stronger.
Adaptability's a 1.33x boost?
Yeah, I always thought it was a 1.5x extra boost to STAB moves (e.g. thought Mega Lucario's Close Combat was effectively 180BP, not 160BP) but now that I look it up that is correct.
So I guess that Mega Lucario's priority would be stronger than before, we'd have to see how that goes, but it won't have quite that wallbreaking power so it should be alright.
I'll also have to reconsider whether Adaptability Dodrio should lose Brave Bird, it doesn't seem quite so overpowered to me now and it doesn't have useful coverage moves like Close Combat as Staraptor does. For comparison,
252 Atk Choice Band Reckless Staraptor Brave Bird vs. 252 HP / 252+ Def Hippowdon: 213-252 (50.7 - 60%) -- 85.9% chance to 2HKO after Leftovers recovery
252 Atk Choice Band Adaptability Dodrio Brave Bird vs. 252 HP / 252+ Def Hippowdon: 224-264 (53.3 - 62.8%) -- guaranteed 2HKO after Leftovers recovery
They would perform really similar roles but I suppose that's just what happens when Game Freak uses the 'fast and strong Normal/Flying type' concept over and over