In regards to the Ak vs M9, one thing I think alot of people overlook with the Ak is that it has more ammo, takes less shots to kill, and has a slower rate of fire. I used to use the Jade M9 as my main loadout weapon and now often use Flynn's M9, and one problem I've encounted alot with those guns is running low on ammo over time and having to switch to my secondary. I don't really run into that problem very often when I'm using the Ak, even if I don't use a Max Ammo mod and go a long time without dying.
Flynn's M9? The one with the blindfire mod?
I assume you blindfired with it then.
Regarding AK, the reason it's overlooked.... you just mentioned it. The balancing out of the AK goes to the other two characteristics you mentioned.
As an auto-enthusiast (that includes the KAL7, yes), one way for you to get as much kills as possible beofre running out of ammo (or dying, even) is to strafe aim. That also applies to the AK, even- you won't need the extra bullets if you do well with the aim.
But, BUT, I love your support for the AK. AK deserves the respect, yo. I mean, it's the staple gun for any shooter using real weapons!