ok i liked AM's post saying "serperior isn't moving up" but i then got curious of
WhiteQueen assault vest serperior set and i realized this thing shouldn't be in a-. the set beats assault vest tornadus-t as it wears itself down by switching into leaf storm and stealth rock, eventually falling to +2 hidden power rock which does around 43% from my experience. giga drain is something i played with on the same set and it lets you completely rip through passive teams because it lets you negate status damage such as scald burns and keeps you healthy to tank hits. also pretty much the rest of specially based metagame faster than serperior loses when packing an assault vest set such as raikou, mega alakazam, and starmie's life orb ice beam only does around 66% while you heal yourself back with giga drain. coba berry, miracle seed, and leftovers sets are good as always. i ran it with magnezone and it is just ridiculous how this thing completely invalidates balance teams with proper support which you don't even need much of. you can run hidden power [fire], but i was just experimenting with rock. fire is generally better if you are limited on teamslots anyways. the one thing i see is people just throw a serperior on their team but don't support it which is why the common thought is it is an a- 'mon. look at the rest of the a- rankings and serperior is better than most (if not all) of them.
being able to set-up by attacking is way to good to be a- to be honest allowing you to take advantage of weakened 'mons while boosting up. i propose a rise to
a rank because i think that wq kind of over exaggerated with a+ rank. i know no one is going to agree with me, but i'll give it a shot.
e: also would like to put out there that tornadus-t is a shitty check to serperior. idk why people call it a counter when it can get paralyzed, misses hurricane, and overpredicts causing you to lose more 'mons in the process or just stack up more damage on your so claimed "serperior counter"