Yes, it does affect the damage.
You don’t get the Terramotes, though, and with Landslide hitting up to 12 times with both legendaries, thats a lot of damage to give up.
Its why I switched from Pulverize myself. I felt it was better to go all in on Trampleslide or all in on Pulverize as the two weren’t mixing that well. Plus Symbiotic aspect paired with Nature’s Fury is just a lot of fun.