I know that a LOT of people were unhappy with House of M as an event, but honestly it has to be unhappy in a different kind of way than how Civil War is lighting the fanbase up.
HoM was a rushed story with pacing issues that resolved itself suddenly at the end (and I'm certain there are other criticisms as well, I've read them for over a year now... lol). But honestly, House of M didn't bastardize the characters the way Civil War is; using Millaristic (get it? heh) dialogue with faux political commentary supplemented with tough guy one liners. I'm not singing the praises of House of M, but in contrast to Civil War it's a work of art.