Burger King's burger unit price is a bit higher compared to KFC, but Burger King's burger unit portion is more sufficient and bigger. If you can get full with two KFC burgers, then you will be full with one Burger King burger.

Compared to Burger King, KFC's burgers are considerably cheaper per unit. But again, the individual burgers are much smaller. So eating at both of them, the money spent is actually not comparable, so the grade of the two of them is also indistinguishable.