To be fair, Jenova cells help a lot with the stuff he can do.
Jenova cells and mako infusions help by making him
consistently badass. He had none of that when he grabbed a sword and went full blender on a unit of evil super soldiers, nor when he overpowered and killed Sephiroth.
I think the big reveal is that he doesn't have to be Captain America to be someone. He just have to be the country boy he always was.
Exactly, that mountain dwelling kid from the sticks is enough, he was always enough. Clouds struggle to me isn't about accepting that he isn't Captain America, it's about his sense of self-worth being so low he can't see that he already is.
He may have failed the SOLDIER exam, he may be introvert. But he has a heart in the right place. A golden heart that made him move mountains (going after Tifa in the mountais when they were children, Killing Sephiroth during the Nibelheim incident etc etc.)
The sad thing is, him going after Tifa is where the problem starts, as far as I can tell. Because he didn't save her then, he convinced himself he was too weak, too worthless. He overlooked the fact that he not only survived that fall, he was barely injured.
This is also a fun connection for future events btw, with how he failed to rescue the girl but he
tried and that's enough for said girl. History repeats on that one.
So I think it's a bit of both ? He's a unextraordinary person who made extraordinary achievements to protect what he loves.
On this note in particular I agree fully. He never got the official title of SOLDIER, let alone the prestige of making First Class. In that regard yes, he's ordinary, just some guy. His story is about learning (largely through Tifa) that he doesn't need to be an official, super badass SOLDIER to be extraordinary. Who is, what he can do? It's enough. And vitally, it'd be enough for her even if he was just some guy.
And he cherishes everything epic music note
Still makes me smile every time.