Yes, they felt incredibly weak to Gravis.
Whenever he had seen a Heaven's Magnate in the past, they had exuded unfathomable power.
Yet, when Gravis was on the same level as them, he felt the difference.
These Heaven's Magnates that hadn't comprehended the Law of Energy…
Gravis would be able to beat them in a single strike.
Gravis also quickly realized why that was.
It was Gravis' ability to emulate the mindset of the Avatar of Death.
If it were only the Major Law of Death, Gravis would definitely be more powerful, but the other Heaven's Magnates would at least be able to put up a fight. The two of them would fight for a while. The Heaven's Magnate would accrue nearly unhealable injuries while Gravis would gain an Energy advantage.