Another point in favour of gimballed weapons is that they allow you more freedom to manoeuvre your ship while firing.
And this is why I love my gimballed beams. Most of the time my targets are not directly in front of me.
Plus, even when they wobble due to chaff the amount of on-target hits (i.e. time on target) is about the same as I achieve when using fixed weapons. When in close with bigger ships the wobble doesn't matter, at least as regards hull damage (obviously subsystem damage will decrease).