It wasn't a comparison per se as much as it was about the popularity of games. This just goes on to show the different taste of PC gamers and console gamers. Please don't interpret it as something else.Also the distinction consoles vs pc makes no sense. PC is one platform as a whole yes, but consoles arent. PS4/PS3/XB1/XB360 dont make one platform or one SKU as a whole. So yes, PC will always sell a fraction of it if you compare one platform to every others.
Bad word of mouth is no excuse. Resident Evil 6 still keeps selling well. It launched to around 4 million and has steady legs. Sells like 100k-200k each quarter for Capcom. The same goes for Resident Evil 5.
Back in October 2013, Resident Evil 5 was at 6.5 million and Resident Evil 6 was at 5.2 million. This number doesn't include the PC version BTW.