question on limit break

[aisustrong]

Completely dependent on the average iLVL of the weapons in the group. Who uses the LB has no impact on the damage, and also, no buffs or anything impact the damage done.

what about debuffs on the caster or the victim?
and so if there was say, a light party where the dps and tank all had i120+ weapon on and the healer had i100 weapon on, it would make the lb do less damage?