1. A heavy metal door that yes was a foot thick
Looking back at the scan, the door wasn't even half a foot thick, dude.
Gnost dural is faced with a similar door."So...Any chance you can just use the force and rip that thing open for me?"
"Some of the great Masters of legend might have that kind of power, but such a feat is beyond me."Not only does satele have that kind of power, she has the power to do it casually.
Any proof the two doors are even of the same caliber? Satele's door was about 10 feet high and less than 5 inches thick.
The Barsen'thor casually ripped through a door that was around 50 feet tall and 6 feet thick, while weakened, before the peak of her strength.
The door could be of completely different caliber. I know Galen Marek has blasted through doors like that without even stopping his charge, or gesturing. If Gnost Dural can't break through a door like that at all, it only speaks for his own inability to compete with the upper tier Force Users.