Of course it's stronger as the regular mob, as I said, it's a strengthened mob and it can't be to weak as it's an alternative to an event that requires time and efforts.
But it's not a wb and not supposed to be. It was created for 1 quest only as an alternative to Abyssal for EU players and is not intended to be a wb and provide any rewards.
We can weaken it further, but don't plan to turn it into a wb or add any additional rewards or extra quests for it.