Epic there are possible ways to cripple it.Trick room,body slam.Thats just using his speed againts him.Gyro Ball is a thing.And who can learn them trick rooms and gyro balls.The one and the only Bronzong.It needs to watch for HP fire but running Spd can take one.
Trick room sucks in UU and even if someone wants to use it, Mega Aerodactyl is even worse off because of it's even higher base speed. Trick room doesn't just screw over sceptile, it screws over every single fast pokemon. Lol @ body slam, it's an extremely unviable move except maybe when backed by refrigerate, pixilate, and aerilate. Gyro Ball does more damage to Aerodactyl and is super effective against it as well, so Gyro Ball isn't always the end all be all to it. Also, bronzong's good typing and abilities let's it beat a lot of pokemon, not just sceptile.
Trick Room uses Mega Sceptile's speed against it and theres the fact that Aerodactyl is the Mega of choice on nearly every team.
First off, Trick Room isn't very viable in UU. Second, Mega Aerodactyl is even faster than mega sceptile so the same argument about trick room fucking sceptile over applies for Aerodactyl as well. Also, just because one pokemon is good doesn't mean another pokemon is bad just because of it. There's opportunity cost, yes, but There is opportunity cost for everything. Those two points are moot.
mega scept is an extremely niche mon, idt it should move up; in fact, i actually think it should go down.
vs stall it's pretty bad, it's not really gonna get past florges or blissey.
vs balance there's also the florges issue but there's also mega aero which revenges it.
vs offense i believe it works the best, but it doesnt really have free switches plus it's easy to revenge anyways.
i personally see mega scept as faster shaymin, but much frailer, lacking natural cure and consuming a mega slot.
vs stall the SD set and the substitute set have different checks, The SD set beats both florges and blissey with Leaf Blade and Drain Punch respectively, but can't touch pokemon like Forretress. The Sub set can beat Forretress but has trouble against it's normal checks. It's different sets make it very dangerous against stall, particularly the sub set, bc then it can't get poisoned.
vs balance the SD set can get past florges, but the Substitute set cannot, as I have said. Regular Aero cannot revenge it if Mega Sceptile is already evolved without Dragon Pulse at least doing decent damage.
252 SpA Mega Sceptile Dragon Pulse vs. 0 HP / 0 SpD Mega Aerodactyl: 157-186 (52.1 - 61.7%) -- guaranteed 2HKO
vs offense it does the best against and the Substitute set has a nice free switch in Crocune and is very good at forcing switches itsself. lol @ it's easy to revenge bc it's not.
Shaymin and Sceptile have different roles, so they can't really be compared.