tl;dr = wait until they fix this game for PC and enjoy the console version
ok, i may get some heat for this, but don't get this for pc, at least not yet.
a good bit of the community feels that this game was geared more towards having a successful release on the consoles, and since you already have it on a console continue to enjoy it there. keep an eye on the forums as well as the steam forums and once you see less complaints, and requests about something to get fixed, and more posts on hey such-and-such were fixed, thank you crytek, then start thinking about getting this game for pc. as it stands right now multiplayer is having severe problems ranging from unlocks/xp being reset, to random disconnects, to cheaters/aimbotters/hackers (go check youtube), people being unable to even log in to multiplayer (a problem i have been experiencing since launch) and more.
because i have been having a problem with this game since launch (pre-ordered through steam) i have been constantly watching this forum as well as steam's and have seen more negative things about this game than positive, most of it about multiplayer (which is where you seem to be focused). as for singleplayer, the complaints are usually around AI which i imagine is probably the same for console, and graphics because they ARE the same as console, which means that they are restricted by hardware from 2005 and so when compared to crysis and warhead which were PC titles primarily the graphics look... well... worse than its predecessors which focused on being a benchmark of PC gaming requiring you to have the best of the best computers to run it on MAXIMUM SETTINGS and still have a good fps.
anyways, not a rant, could be, probably should be, but not, just a warning -- wait until it gets fixed before getting the PC version, this way if it doesn't get fixed you won't be pissed off like the rest of us.
thanks for all the info i may still get it since i can get it off amazon for 10 dollars
And arent u wondering why someone is selling ti for 10 bucks

Ill sell you mine for 5!!