Which is better, Absolute Zero or Artillery Battery!
Absolute Zero freezes every bloon on the screen except zebras and whites! One million yays!
Artillery Battery immobilizes bloons on the screen, but, it's technically not freezing, so sharp things can harm them! One googolplex yays!
My verdict: ARTLLERY BATTERY FTW
I would prefer Artillery Battery. Not only does the ability deal damage, but it also freezes MOAB-Class. While the bloons are stunned, you might even be able to re-target your Mortar to pop even more bloons.
Anon is right: Absolute Zero can freeze White/Zebras.
Absolute Zero can freeze whites and zebras, but Artillery Battery can also stun MOAB-class bloons. Although it costs more, Artillery Battery also bombards every bloon 5 times, as well as tripling its normal attack rate.