Late reply, but I'm also curious where it is actually implemented. As a major nerd who keeps up reasonably well with NHL Edge data (enough to manually add every players hardest shot and max skating speed to an Excel-file once per game at least) , I was hoping to see players who are fast, confirmed by their data, be fast in the game too, but it doesn't seem to be the case.
I've really started to lose hope in the game, I'm reluctant to write. Being a franchise player get's harder and harder, especially if it's true what you're writing about the Edge data only being used in HUT and Be a pro. It feels more necessary to Franchise Mode than to HUT, where realism is not the main focus of the games anyway.