Oh, awesome. "We're butthurt because we did exactly what those reviewers said - re-fried an old engine, added a few new models, a few new maps and called it a new game without implementing any ground-breaking changes. But they can suck it, it's a CoD, it will sell anyways trolololo".
God, do I hate N-Space. MW2 was cool, GoldenEye was cool, but everything else really feels like "the exact same game".
It is Activision's buisness to port their big titles to the latest console, it's their buisness to aim at perfection. The 3DS has nearly the same "capabilities" as a Wii, don't tell me they "weren't able to port it" because it's pure bull.
You're missing the point. They're complaining because ONM was lamenting the fact that there wasn't a 3DS version when they couldn't have done one to begin with. That was out of their control. If there is anyone to blame, it's Activision. Certainly not n-Space.
There's only so much you can do with the DS. Creating an entire new engine for a system as limited as the DS would be a pointless task and frankly, probably won't net much improvement. And seeing as you obviously haven't played the game, they radically changed the controls, user-interface and added some decent environment effects. While this certainly doesn't make the game exceptional, it is decent by DS standards.
It seems to be that most of your complaints have more to do with decisions made by Activision. I don't know why you're lashing out at n-Space.