User blog comment:IMCR8Z/What if Wall-nut Bowling was in PvZ 2?/@comment-16296785-20131104104556/@comment-5792287-20131104111516

Tell that to the original Wall-nut Bowling

Wall-nuts don't simply do a fixed amount of damage, the damage varies depending on the zombie. For example, Gargantuars only need to be hit about five times to die in Co-op Bowling, and they throw their Imp after the fourth hit. They should throw their Imp after the third hit, but they don't.

Also, Wall-nuts must do about 30 damage per hit to kill a Garg in five hits, which would one-hit kill Coneheads, and in the Console versions, Screen Door Zombies take one more hit than Bucketheads.