-has been watching from the sidelines as I clear Olympus-

Okay, uh... No? Being able to match the strongest Saber in-lore (cited multiple times throughout pretty much all of Fate) despite being a comparatively modern Servant in a setting where relative age compared to the present tends to be a good indicator of skill? Don't think so.

That'd be like saying you could match Lancelot head-on, which... Logically isn't possible either.