Well, as far as commercial monetary gain, I think you will find that Nike will sell far more shirts, Villa will have greater exposure due to the worldwide popularity of the Nike brand, greater sales, invoke greater revenue, the board have released no figures on the deal itself, but taking on board other premiership deals and the fact the Nike sponsorship budget is probably larger Hummels entire turnover, I would imagine this deal dwarfs the Hummel deal!!
Whilst I agree on running shoes quality, I see you don't mention Hummel in your list of sporting manufacturers, and with Nike being one of the biggest in the business (if not the biggest) they don't do to bad!