@Fork_x_Spoon Thank you for explaining this in more detail 🙂
I understand the Scientist part now a lot more. I don't really agree with Chomper, though (I think many forum members will agree with you). He can approach with burrow, but would have to sacrifice his insta-kill because it would be suicide if more than one zombie were around. His movements in this state are very visible and audible, so everyone sprints away. When SB jumps, he often goes off screen and targeting him would mean looking up, making you vulnerable for anything else. Even if there are multiple plants where he lands, he puls them in close and has 2 insta-kills that take care of them. I agree with the part about primary weapons, though.