One thing I like in a food is ease of eating. Burgers and pizza of course fulfill that desire nicely. A really good burger of course is ... really good, and the same is true for pizza. One might consider mediocre to not good items of each, fast food of course is burger centric. I think I'd rather have a poor pizza than a poor burger. I used to get Papa John's for the kids fairly often, they were tolerable, Chucky Cheese pizzas were about the worst I ever tried. Grocery store pizzas are usually OK.
Just thinking about a so so pizza vs so so burger ... maybe I'd go pizza.
We did a tasting tour in Rome across the river in Trasteverde, if I can spell it right, the foods there were super good. We also had pizza at some sidewalk place that clearly caters to tourists and it was quite good as well, fed four of us for about $50.
The 2-3 burgers I've tried in Europe were ... weird, to me.