The Chasers vs. Sora, Riku, and King Mickey

[SuperSaiyan4]

the legendary warriors of the keyblade vs. the new dudes and a king

[Enclave]

In KH2 FM+ Sora already beat the older one who did appear to be the strongest. Considering the fact that Riku is approx. Sora's equal and that Mickey is no slouch himself I would say Sora, Riku and Mickey would probably win.

Be bloody awesome to watch though.