How is that any different from the old cannon?
Firstly, the old EU was never truly canon, as the official word of God was always that the 'movie canon' was above whatever the books, series or games told you.
Secondly, as I said in my post, as far as I know the old Canon never ever put extremely strong (active) Jedi in the same timeline as the OT. The OT period still had Luke as the basically the only Jedi who dared to openly stand against the Empire and stand a chance. The only other Jedi I can think of that openly fought against the Empire at roughly the same time as Luke was Qu Rahn and he was basically an Obi-Wan case (old guy far past his prime, easily killed by the Empire). Sure, that led to Kyle Katarn but in Dark Forces II he was never portrayed as stronger than Luke in RotJ, while some people in the new canon would wipe the floor with RotJ Luke.
Of course, the old EU had plenty of "Fuck you"-strong Jedi and Sith that far outclassed anything in the movies, but I'm not complaining that stronger Jedi and Sith than OT Vader exist, as OT Vader's scariness never came from the fact that he's apparently literally the strongest Sith that ever lived (as the new canon would want you to believe). It came from how he looked, how he acted and the fact that normal human beings basically don't stand a chance against his powers and how the only people that could have the power to stop Vader are old, hunted down and in hiding.
The new EU wants to create this idea that Vader was literally unbeatable for anyone except Luke Skywalker, which is IMO a dumb idea. Especially since they keep creating Jedi during Luke's time that are much stronger than Luke, so their solution is to just keep increasing Vader's combat prowess. If you consider all the new canon stuff, Vader suddenly seems hilariously depowered in the OT.
