LOL no. To start, overused does not mean overpowered. People tend to use the most versatile weapons over the most powerful ones after the first week or so; In MW2 everyone was running around with dual shotguns kicking ass anyway. They're better balanced in Black Ops, but the silenced SPAS is still insane.
In Black ops most people use the Galil or the FAMAS, neither of which are overpowered.
WTF does "overused" mean? Just means a lot of people use it. Why? Because they find it very effective.
Versatility is a part of a weapon's power. If you have a weapon with a very short range it is not versatile, so it must be correspondingly powerful within it's own range.
The issue with 1887s wasn't the power, it was the range, which was nerfed (not enough IMO).