psi ops was including mechanical weaponry like guns and such... but this game supposedly relies on remote viewing and other psychic powers without really touching modern weapons... which is why it sounds better than psi ops in my opinion
From what I've seen and heard about both games, Psi-Ops is an "action" game - where you use your powers to attack and destroy everything in your path. Second Sight, however, is more about stealth, using your powers to stay stealthy.
To me, Second Sight also looks like the more polished game.
I'm from the uk and it came out here friday just gone, it's a good game but not quite as long as you would hope and by the looks of it no unlockable extras so not a lot of replay value though. Has a great story line and good enough graphics, but still think it could of been better.