In Japan I had pizzas with corn, potatoes, crab, shrimp, and tuna as toppings.

I would not like those on burgers and fries.

So pizza wins for its ability to deliciously accept any topping ever.

And here's a pizza I had with over 30 toppings on it:

Pizza is better... because you can do so much more with it than you can with burgers or fries.

I like anchovies and green olives. 

Rub, what restaurant is that? Islands?

For me, no question. PIZZA! I love it. Whether it's a deluxe meat lovers pizza, or a simple cheese pizza.......I love it. Burgers come next for me. Something about biting into a delicious patty just feels so right. And fries are last.......because I feel like that they need to accompany something. It doesn't feel right eating them alone.

 It's this tiny restaurant I used to work at called Cafe 322 in Sierra Madre, CA.  On my last night working there they put every ingredient in the building onto a super pizza for me.  It must've weighed at least a ton.

Sushi > Pizza

Okonomiyaki > all. ^_~

As for the 3 choices, I'll go with pizza.  I like hamburgers a bit more, but there are more varieties of pizza out there than hamburgers (IMO). 

Pizza by far thank you :D

 Well if we're gonna throw in okonomiyaki, of course it wins.  You can even throw pizza, burgers, and fires all into a super okonomiyaki.  It is the best thing in life.