You might be able to kill your average troller running around with an SMG out for lulz, but the SMG is already the easiest gun to use, and anyone that knows how to play RO that is using it on Apartments will decimate you.
I don't know why people think they can do better with a bolt action then an SMG on a CQB map. I think they just do it to pretend to be pro. If you are doing well with a bold action on such a small map, then I guarantee you you will do even better with a semi or SMG. There is nowhere in Apartments where you are too far enough away from the enemy to hit them with an SMG.
This is a realism game, and if you haven't noticed, then in real life SMGs were created for CQB.
I'm not pretending to be pro, I guess I'm trying to make a statement about knowing your limits.
A good rifleman knows to avoid CQC, as he is fairly helpless up close. I'm getting quite good at shooting-and-scooting before the enemy (and the kill-cam) can nail me down and ram a PPSh up my butt. I manage to top the scoreboards pretty consistently using guerrilla tactics like this.
So no, the rifle doesn't stand a chance against the SMG up close. It's up to the rifleman to KNOW BETTER, and to know when it's time to make a break for it before the Assault troopers kick down his door. SMG players play aggressively, trying to close the gap as quickly as possible to overwhelm the enemy with superior firepower. However, he is weak in the sense that he is far less stealthy than the rifleman.
The clatter of an SMG is very distinctive, and a burst or two lets everyone zero in on your position. A good rifleman only makes a sound when he fires, and it's never consistent enough for the enemy to get a good bearing on him (unless he's dumb enough to camp one spot for too long). Long story short, the rifle becomes a stealth weapon in CQC situations, relying on ambush tactics to overcome it's shortcomings.
tl;dr, both strategies are perfectly viable, but you have to know the limits of your weapons. SMGs aren't the end all for Apartments. They are the easier strategy, sure, but it doesn't make rifles any less viable for someone willing to play smart, which is what I figured this community was all about.