Lol you guys are giving medicham a little TOO much credit as a wallbreaker.
I will admit that its arguably the best wallbreaker in the tier right now, but the fact that mega sableye, a pokemon seen on pretty much every good stall team, hard walls mega medicham goes against its favor quite a bit. The fact that the wallbreaker and mega pokemon of your team is almost completely useless against stall is enough reason for it to stay A. Atleast keldeo can scald burn and icy wind or hp flying to eventually overwhelm amoongus, but mega medicham is very reliant on teammates weakening mega sableye for it, and any competent stall player will keep their msab healthy enough for cham. Unless you get an ice punch freeze, its almost impossible for cham to put in work against msab stall.
Everybody already knows its other flaws: its not that fast or bulky, in contrast to pokemon like terrakion, thundurus, cb ttar, or mega heracross, which can all wallbreak fairly sufficiently and bring much more to the table. There's plenty of competition not only for wallbreakers but also for megas, and just having mega medicham on the team means you're going to have to dedicate atleast 1-2 pokemon as pivots to bring it in to use it well.
Take a look at every other pokemon in A+
Mega Diancie checks key threats to offense and has a difficult to wall stab combo as well as excellent stats and typing; it does more than just attack.
Keldeo, Latios, TTar, Mega Scizor, Torn-t, Heatran, LanT, and Rotom-w are all some of the best at the several roles they bring to any team, and if they only do one thing they do it fucking well without much support (or they ARE the support)
What mega medi does best is simply hjk, and that'd be great if that was all it had to do to screw any slower team over, but the mere presence of mega sableye means your wallbreaker might be completely useless at its only job.
Mega medi's good, but its far from A+, especially in the newer standards of ou vr.
I will admit that its arguably the best wallbreaker in the tier right now, but the fact that mega sableye, a pokemon seen on pretty much every good stall team, hard walls mega medicham goes against its favor quite a bit. The fact that the wallbreaker and mega pokemon of your team is almost completely useless against stall is enough reason for it to stay A. Atleast keldeo can scald burn and icy wind or hp flying to eventually overwhelm amoongus, but mega medicham is very reliant on teammates weakening mega sableye for it, and any competent stall player will keep their msab healthy enough for cham. Unless you get an ice punch freeze, its almost impossible for cham to put in work against msab stall.
Everybody already knows its other flaws: its not that fast or bulky, in contrast to pokemon like terrakion, thundurus, cb ttar, or mega heracross, which can all wallbreak fairly sufficiently and bring much more to the table. There's plenty of competition not only for wallbreakers but also for megas, and just having mega medicham on the team means you're going to have to dedicate atleast 1-2 pokemon as pivots to bring it in to use it well.
Take a look at every other pokemon in A+
Mega Diancie checks key threats to offense and has a difficult to wall stab combo as well as excellent stats and typing; it does more than just attack.
Keldeo, Latios, TTar, Mega Scizor, Torn-t, Heatran, LanT, and Rotom-w are all some of the best at the several roles they bring to any team, and if they only do one thing they do it fucking well without much support (or they ARE the support)
What mega medi does best is simply hjk, and that'd be great if that was all it had to do to screw any slower team over, but the mere presence of mega sableye means your wallbreaker might be completely useless at its only job.
Mega medi's good, but its far from A+, especially in the newer standards of ou vr.