Is it better than the Doom 3 mod that came out before?
It's a native Quest port, so it's not as good as the Fully Possessed PC mod. The main difference is lack of real-time shadows.
However, it does incorporate a lot of the features of the PC mod, including touch operated screens, IK body and arms (which seems a little broken right now), and torch in one hand with the gun in the other.
If you have a PC and a wireless/link connection then maybe the PC mod might be better, but I had lots of issues with the save games becoming corrupt and losing progress in the PC version.