.

Having had both...It totally depends. I have been w/ women like Smartassgirl, that know how to work a cock...hair ponytails so I can hold her and work her on my cock.
The difference is the woman that sucked great - loved doing it.
I always talked them about it, any woman that loves doing it, it has been a power trip for them, and its a huge turn on.
Smartassgirl, do you agree?
Guys for sure know how to work the equipment - the advantage of having one But I have had some crappy blowjobs from guys. Have had some incredible head spinning kind as well.

So My answer is...it depends

her maybe?

In my experience, I can't say who sucks "better" cock.
But I can say who is Allowed to suck my cock: MEN.

I don't hate women; but I have no plans for them.

I've had very few guys who were lousy at sucking cock,
perhaps because they were just trying to get it over with.
But, I've had so many awesome cock suckers they make
me feel so glad that I've never been to bed
with women!