Did a quick search on the local website and the sugar content for almost all pizzas is around 1.5g per 100g of pizza and that's with toppings included. Only 2 types has more than 2g (bbq classic and bbq chicken). I generally wouldn't call it full of sugar.
1.5g sugar per 100g is very noticeable, really ruins the dry salty taste of bread. At least I associate that kind of test with low quality fast food bread, not real bread. Pizza bread shouldn't taste like that, all the pizza I've eaten the bread tastes home made because it is. Switching that to the taste of fast food is a massive downgrade.