No tie, MSFT had more hardware sales, software sales, and XBL gold accounts. Also VGchartz has been wrong for some time, I know you remember the last MSFT announcement when we learned 360 is a few million undertracked and still selling.
On topic Valve is a direct competitor now and I think devs developing for XB1 and PC simultaneaously may be more beneficial than steam, especially if the rumor that Valve gets 30% from each game is true.
If they think they're ACTUALLY going to take on and beat Steam... they are delusional. That service is here to stay.