I wouldn't go that far. Mega 'Dactyl is an okay Mega but is nowhere near what anyone would call "godlike". Unfortunately, although it got a great ability in Tough Claws, it's stuck with some weak moves to abuse it. After all, it's stuck with Aerial Ace for a reliable flying STAB, which has such a low base power; it really, desperately wishes it got Brave Bird. Most of its other best coverage moves don't get a Tough Claws boost, either; Stone Edge and Earthquake unfortunately miss out on it. It does get the boost on Aqua Tail and Fire Fang though, but these moves are used comparatively less. Compared to things like Mega Metagross and Mega Charizard X, who both have the same ability, both of them have their best STAB attacks and some of their coverage moves get a Tough Claws boost as well. It also has a serious case of 4MSS; it often finds itself struggling to carry everything it needs, and often misses out on valuable coverage as a result.Aerodactyl was pretty nasty to begin with, given it's Mega, he went all sorts of god-like.
It's not bad, since that speed tier is fantastic, but let's not over-exaggerate how good it is, lol.