Godchild1020 on 05 April 2013
I don't know if you are adding games from the same developer, but from different franchises, but how about Ninja Theory's Heavenly Sword (PS3 Only) and Enslaved (PS3 & 360)? HS sold 1.58 according to Vgchartz and Enslaved sold less than a million.
I think Enslaved and Heavenly Sword were great games and on par with each other, so I don't think it could be the case where the second game was bad. The second game from them did sell worse, but many claim it was due to someone from the company talking bad about gamers or something (So, don't quote me on that).
