I know joe keeps on saying "but US/UM already have more than emerald", but there is something US/UM doesn't have more than... What is that? None other than Omega Ruby and Alpha Sapphire. First, US/UM are practically remakes of Sun/Moon like how OrAs are remakes of Ruby/Sapphire and you know what? OrAs has much more than US/UM right now. Let's make a comparison...

Introduced in US/UM so far: 3 new forms (4 if you count Ash Hat Pikachu), 3 new Ultra Beasts, 4 new Z-Moves, Rotom Dex upgrade, 4 new characters which are part of a new team, new locations, new surf mini game, photo club, and some story changes

Introduced in OrAs: 19 New Mega Evolutions, 2 New Forms (6 if you count Cosplay Pikachu), Soaring Feature that lets you find Legendaries in a cool way (not just flying down a fancy hallway jumping into Ultra Beast portals), upgraded Secret Bases and Contests, Upgraded Pokenav, 3 new characters, and a bunch of story and location changes, not to mention you actually go into space in the post game