Yea i saw what the wiki says, but its like the knockback isnt the same. I setup the same jump but with regular rocket, both making it so you prefire 6 rockets perfectly synced together, and tried the wallsync over and over again. With the entities spawning rockets (with 112 damage 292 raidus) i beat the jump twice in 1h, and with normal rockets i got it on my first 5 attempts.
I lowered the end a bit and managed to do the whole jump legit without perfect sync prefires, so i guess that will do.