Same with PC. There is a fix however...

Don't snipe.

Isn't the point in the Gauss to remove/drain energy? So I suppose if someone is walking around without armour but full energy it would still be 2 hit kill. That or of course, you just hit them in the arm.

Theres already a thread literally titled "Gauss" about this, but anyways...

While those stats were taken from the PC version, they aren't accurate on the PC Multiplayer either, so this isn't just a PS3 issue.
Not only does it not OHK non-armored targets on chest shots, but it also has some kind of bug that makes it miss randomly, as if you're firing from the hip even when scoped and crouched.

http://www.youtube.com/watch?v=vMvo1P8KTsw

:(

i find it more disturbing that out of 12 players in the above vid only 2 have a ping less than 150, come on one guy has a ping=435 i havent played a mp game with the majority of players running with a ping higher than 200 since playing unreal tournament 1 in 1997 on my 28.8kbps modem...sure most games you may have a few players clocking in over 150 but not nearly ALL!!!!