XBO had deals last month, too, yet the PS4 beat it almost 2:1. I just don't see the XBO beating PS4 til maybe Dec.
This only affected the very last week of January and the XBO was dead the 3 weeks before because of the discounts during the holiday season. It also showed this on the NPD prediction thread and that it had 0 chances to keep up with Switch and PS4 in January.
XBO was on sale in some form or another throughout February, and in front of the PS4 for half of it in the prediction thread, ending up slightly in front.
PS4 can end up beating the XBO, but it will be not by much if it does (the advantage in the prediction thread is pretty slim, close to a tossup in elections).
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454