Do you have your own 'signature' dishes or do you have meals you both cook? If you both make some of the same meals, do you prefer yours or your OH's version?
Pretty much every person I've ever met insists their spag bol is the best. I have to be honest, mine is obviously better
The others all tasted the same despite apparently 'everyone' telling them all it was the best they'd ever had 
I tend to think that even if someone else is a reasonable cook, but so are we, if they don't cook it the way we would then we still prefer our own version? The only exception was when I dated a guy who was half-Indian. I haven't really attempted homemade curry after that. It'll never live up to his cooking!