I don't recall having much fun with heavy gear 2... might have to dig out my disc and see if it will reinstall, but i recall weaker training missions, not feeling connected to the story, dull missions, unsatisfying weapons. I remember pulling the trigger on an ac20 in mw3 it was nuts:BADADADDADADDDADABOOM. It feeling to twitchy or loose compared to mw, the gears didn't seem to have the personality of the mechs, they were too gundamy but weak... I had been playing mw2 for awhile when HG2 came out along side mw3, then mw4 came out the next year and i needed drive space...
Also, im not that confidant about mektek...