Personally, I choose to believe that what we are seeing here is primarily the impact of people realizing that Might & Magic X: Legacy was the GotY of 2014 and buying it in droves.
Very true.The complaints about Ubisoft's ports are hugely exaggerated and if we're talking about them relative to their console versions, then it's not really an issue. I can't remember the last time a Ubisoft game was worse on PC than it was on consoles and most of the recent ones have some nice PC exclusive effects - which is more than can be said for most games from the big AAA publishers.
Everyone on forums like these complain about Ubisoft regardless of platform, but their games sell a lot anyway - which is probably why it's a good idea not entirely base your opinion on perspectives from enthusiast forums/websites.