Epic boss bonus unit??

[CHONG]

There is a unit called strokkur striker with a bonus of +4% epic boss damage. The million dollar question I have. Is will this bonus help out with the hardcore boss, and the boss raid?? I only ask because it takes one regular attack for me to kill the epic boss right now. So technically it won't help me any. Unless it helps with the hatcire boss or even the boss raid.

[Illuminatus]

Its probably a boost unit for the newer players to buy who cant get far in the epic boss
Just my thought

[Annihilator2]

I am sure that this boost will not help with hardcore boss.
I think that it will help only with epic boss.