The thing about this game is that it's completely separate from any existing continuity, as I've tried explaining in PMs (hence why I connected Miles to the Titans and not the Champions in my sheet). You don't have to follow existing continuity to a tee, and it's encouraged that you don't. Personally I'm a little uncomfortable with how you've set up Miles, and would've liked if you continued our discussion to make sure that, like I said in our PMs, we're both happy. 

This is ultimately up to [@Lord Wraith] and [@Retired] (as the as of yet unannounced co-GM), but that's my personal stance on this.