very interesting. But I'm not sure that this campaign, although 100% valid and I'm sure you are having fun, is the one to compare the two, because comparison between then are obscured by 2 things:
1: Control vs Blast - is one PC doing better because of their class or their playstyle choice?
2: Bladesigner: that's... you should compare that one to a bladelock or valor bard. It's a gish, not quite the same thing.
The "best" way to compare would be a campaign with 2 fairly similar PCs, except one is a sorcerer and one is a wizard. But that's not great, because now you have a party with 2 members that do almost the same thing.