
Originally Posted by
Kaiser-Ace
He has the same power and a better understanding of it that us.
This is purely conjecture, but I think it's because he does know so much more about it than we do that he is limited by it. Our character, instead, is seemingly limited only by our imagination in its capabilities; our lack of knowledge would allow us to be more experimental and creative. Unfortunately, it's hard to really show something like this in-game and the ideas would probably be put into our mouths by someone else.
Related to that last part (and spoilering, because I'm waaaaay off topic):
I know we like to say how the Scions/Alphinaud speak for us and we're basically just doing what everyone else says while being a mime, but the current relic quest has an interesting example of our character thinking for themselves and using their own ideas to finish powering their weapon up - and they're more effective than what others tell us, providing the last boost to our weapon.
Namely, no one tells us to use the past events to further our weapon's strength, but we went and "reimagined" Sohm Al, Aery, and Vault - and it worked.