Question, matibay ba talaga steel epoxy than the regular epoxy?

The nut for holding the license plate fell off my car kasi and it seems that it was only epoxied to the car's body work. I used steel epoxy to stick it back but am afraid na mas mahina sya kaysa dati.

Well, the reason the nut removed is because I have a plate glass installed on top of the plate. Must have been too heavy for the nut's epoxy.