Oh, yes, I am ashamed to admit that the best burger I've ever had was in Shinjuku. 2nd best was in Osaka. These sub ¥1000 burgers beat out the $50 burger at Wynn Las Vegas.
But pizza is popular in Japan, it's just expensive and bad. I've gone off about this before: there's a combo pizza that's seaweed, squid, corn, and mayonnaise. Most of the time it's just shitty crust and miserably flavorless sauce.
So: heresy.