it doesn't take a clip unless you can't aim. Looking at your stats i only play normal and i usually play large map/low pop servers and i have higher kill/min, which means i have less available targets to me than most (and others here have higher than me, not tryign to float my boat just doing hc to nm comparison). Playing on hc might help killing, but playstyle will matter more. This isn't realy war, if i wanted that i would sign up for the army and head to the middle east. Having a map and spotting to coordinate with people i'm not in voip with is nice, as on a battlefield they most likely would yell where the target was at (think of that as a spot). Having a minimap is nice, i mean i could do with out it, but i would have to crank the surround sound up to beyond comfortable levels to i could hear people giving themselves away around me by firing, but honestly i don't want it to sound like i'm in a real war in my basement (once again if i wanted that i would sign up for the army).
My point is, normal is just fine, honestly nm in bf3 is like hc was in bc2. And i played nm in bc2, i would actually like to see a bit lower damage model to be really happy. Hc in bf3 is just stupid, i can spray and pray down a hallway and get some kills, simply because it's like 2 bullets to kill someone, nm i actually need to aim the damn gun. i personally think nm allows more skillful play, and better use of game mechanics (what goods a med pack if 2 bullets kills?).