WP8 is not better than the alternatives. It's good and has some cool features, but it was buggy on release and still suffers from being brand new and all of the lack of polish that comes with that.

There's also, ironically, giant gaping holes in the app/feature selection for business users. No Citrix, no VPN, no app that lets you get to OWA mail if ActiveSync is disabled on your Exchange account, etc.