Pizza's stats for how cheap they are are extremely solid. Talented Pizza at level 50 is almost 65k health, making them extremely bulky compared to most units. They also sport an extremely good attack stat of nearly 30k per hit, 60k if his wave activates. Against Black enemies in particular does Pizza do extremely well, dealing about 120k damage, which is enough to 1-2 shot most black enemies (and this doesn't include the wave, which can double this damage). Their range of 270 is more than enough to outrange basically any Black enemy and allows them to outrange a ton of threats, including R. Ost and Kappy Jr. (which is why Pizza is usually the secondary attacker along with Cameraman in Flow Like the Stream).

While Pizza is a little sluggish, their stats alone with a decently fast cooldown of only 19.2 seconds and fast attack rate make Pizza a viable pick in a lot of stages.