1) Lexaeus, because his power is over 9000 in the battles against him, right?

2) Sora, because...well, it's Sora (the one who can defeat anybody), right?

 

Love and peace...

Probably the only way that Sora could even hope to win is with second chance, once more, leaf bracer, MP rage, and MP haste. If he is using KH1's magic system, MP rage would keep him curing. Though if he uses KH II's magic system... Sora's screwed. Simple as that. Since it would be concievable for Goku to be able to kill Sora some time when his MP is recharging and Sora simply doesn't have the speed to keep away from a saiyan.I guess high ranking stop magic could work on Goku, BUT who knows how long that would last on him. And if Goku would even let them get that spell off. Because Goku can move very fast.Even though Goku doesn't have much experience with magic, doesn't he have experience with chi? I know that isn't quite magic, But it definitely isn't normal.

Sora has quite a few attacks and abilities that grant him armor or invincibility frames, making damage very dificult when you can only actually hit your opponent very two seconds and in that instant they are already set up for another combo. Sora is made to juggle enemies. Also, don't forget the "power of Light" bullshit. He can move at incredible rates with invincibility during them.In a situation of about 100K battle simulation run in my brain, Goku has a 10% win ability. Sora's advance magic, juggling, items, light based abilities, ect make him too OP. Especially with all of his god damn homing attacks.Funnily enough, Vegeta could defeat him in a 45.897% rate, one of the highest. This is accounting he can go Majin at any time, without it he goes to about 33.7768 repeating %. Still incredible. This is due to Vegeta being incredible at range, allowing him to pre-plan most of his shots and fire them at such precise timing that it lands a near-kill in the first second and the end in the next, which is how you must fight Sora. Keep him at range and inable to deal damage, even Magnet and his heat sinking abilities are not good enough to always get Vegeta in a juggle.Of course, this accounts for Sora having keyblades other than Kingdom key. Kingdom Key only lowers his skills greatly, as it generally lowers his range, damage, healing and invulnerable time, and magic skill as well. If Sora has only KK, no dual Keyblade or other keyblade outside KK, the odds tip in the favor of the Z fighters all the way, changing the win ratio for Goku to around sixty-eight and Vegeta to a cool 83.