Yeah, I've had the same experience. During my career in IT, I've worked with two female bosses (both of which were very good), and several other female colleagues as well. I can't think of a bad one to be honest.
The female colleague at my first job wasn't quite as technically skilled as I was, but she knew her limits, did a good job overall and wasn't afraid to ask advice if stuck with something.
Contrast that with some male techs I've come across that just blundered on, made a hash of things and refused to acknowledge their own limitations...