http://www.eurogamer.net/articles/digitalfoundry-dishonored-face-off
It runs quite nice, yeah. There are some screen tearing issues, but that's something most (if not all?) Unreal 3 engine have on the PS3.
anyways, not well from what I hear, mostly because PS3 has issues with Direct X.
The PS3 doesn't have DirectX at all.
Anyway, please use http://www.gamesas.com/topic/1415441-will-this-game-run-properly-on-ps3/ to discuss how Dishonored runs on the PS3, thanks.