Yes, very funny ILS. But the really funny thing is Luke IS one of my preferred characters.
However just like there's no shame in an Obi-Wan fan admitting TPM Kenobi < TPM Maul, similarly there's no shame in a Luke fan calling ROTJ Luke < ROTJ Vader.
Luke simply hadn't had enough training at that point to be >/= Vader. But bring up Timothy Zahn's Heir to the Empire trilogy Luke or Dark Empire Luke and it's a completely different story.
Lucas Post-Prequels has simply revamped the extent of ROTJ Luke's abilities given the amount of training Prequel era Jedi had.
He's half trained by ROTJ according to Lucas, but a Half-Trained Luke is still >/= a Fully Trained Obi-Wan for example. And the speed Luke progressed at to even be "Half Trained" by ROTJ is still Astonishing.
Also Angelalex242 what's with the Half Trained "idiot." Luke is not an idiot, not even with Zero training.