Lost planet or call of duty 3?

I love the onlie play of games . My thing is Iloved the lost planet demo, hate call of dutys 3 single player( its a rehash of the second one, period, plus th 2and one sucked cuz it had no vehicles and snipers killed everything ( i love being able to snipe but lets not take away from the realism here) However my friend did say the multiplayer in call of duty 3 is prestine and neat and feels new? I loved lost planet but I do recall balance issues on multiplayer regarding what weapon you had( although, you can easily fight someone off with the bigger guns(not like in halo : you get the sniper or sword and you win all the time))pretty much I want mayhem and skill and strategy can almost always prevail (not were you can get pinned from playing because you didnt get the sniper fast enough)(also I like to see the magic of team coordination as well, it gives quiet the rush) which would be better for me?