Maybe it is just the people in my circle of friends but penis size seems to trump performance for men. Aside from that I can say that every "hot" woman I have ever met that claimed to be good in the sack has been terrible. Women that are really good don't advertise.
I'm not necessarily good in bed but I won't say no to pretty much anything within reason and I am eager and willing to please. I agree it takes two to tango.