"Ist deine Frau eigentlich gut im Bett?"
"Naja, die einen sagen so, die anderen so..."
Heiko, you absolute melon! You're basically asking if a person is good at something very private and then acting like you didn't just ask the dumbest question ever. This dude is basically saying that his wife's skills in bed are debatable – some folks like it, some don't. It's not about actual skill, but different taste. You're a fool. A magnificent, clueless fool.