"These are just theoretical values. I used the firing rate and reload rates off of the wiki....so there's a good chance the numbers are off.

This is just a quick look at the damages of a Scattergun (clipsize 18) vs Soda Popper (clipsize 6) over time. The Soda Popper clearly takes the lead the more time passes...which is why it's better for tank busting. However, for the first clip of the Scattergun, it's in the lead (up to 3780 damage). Basically, if you used a crit-a-cola with that Scattergun, you'll kill a Giant Medic faster than the Soda Popper would.

Scattergun uses a crit canteen better. Crit canteen lasts 5 seconds. In 5 seconds scattergun does 4680 (13 Shots). Soda Popper does 4320 (12 Shots). That's actually theoretical, I didn't test that.

You'll see that by the end of the 2nd scattergun clip, they're virtually tied up. After that, Soda Popper pulls away"