Let's just throw this out. Say Gallade and Medicham get compared in this new metagame. Here's a little overview of Gallade versus Medicham.
Unboosted Adamant Medicham has somewhere around 97 more Attack than Adamant Gallade, making it generally more effective for Choiced sets. HOWEVER, it has to resort to Hi Jump Kick for STAB, making it general push in STAB strength.
Gallade has a FAR better movepool than Medicham, packing a ton of unpredictable stuff such as Leaf Blade, X-Scissor, Stone Edge, all three elemental Punches, Shadow Sneak, and the ever-important Close Combat. Medicham is rather limited, and its sets are pretty much Hi Jump Kick / Psycho Cut / Ice Punch / Thunderpunch.
Gallade hits 766 Attack after a Swords Dance compared to Medicham's 720 after a Bulk Up. Combine that with the fact that Close Combat and Shadow Sneak are awesome whereas Bullet Punch and Hi Jump Kick are not, and it becomes obvious that Medicham's boosting sets just don't have the kick to them that Gallade's do.
Gallade's packing a very notable 65 / 115 Special Defense, which means that it can take a multitude of Special hits while setting up or attacking, something that Medicham wishes it could do with 60 / 75.
Basically, Medicham is good, but not outstanding, whereas Gallade just kicks ass in absolutely every category. It's been said that if you're not using Swords Dance, X-Scissor, or Shadow Sneak you should be using Medicham, but that's just not true. Medicham's STAB options are shitty, its coverage options aren't all that great, and its boosting options are rather laughable. Its inability to touch Spiritomb at all hurts, and unlike Gallade, when a Ghost switches in and eats its STAB, Medicham usually dies as a result.