I'm going for McDonalds. I'm often a bit picky with my food so I'm not a big fan of most burgers. However I do like the standard burger from the McDonalds. What I however do like is chicken. However in all my experience with the Burger King and their nuggets, their nuggets are the same size as the Mac, but half of the nugget is breading with a tiny core of chicken in it, while the Mac has a thin layer of breading. None of them really tastes like actual chicken tho, it's just massproduction.
Lately there has also been Chicken Tenders at the Mac, which is trying to compete with KFC's Chickenstrips. And I must say, they are giving them a good run for their money. Actual chicken with crispy breading. More then on nuggets but because of the amount of chicken in there and it being actual chicken, it is allowed.
So for me, Burger King never stood a chance.
Edit: Also used to work of MacDonalds for a while