Gut feeling is normal is faster. Some of the mobs are very spongey.
This is why I question how viable it would be in retail. If the added bonus is just more xp, but not enough to make it faster, or more gold, but not enough to make it better than just leveling and farming for the 1.5-2hrs you would save, then what is the purpose?
I think it will need to be heavily, heavily inventivized with mesningful gain, like it feels in lemix, which is another can of worms.
Which is why I sorta hope the baseline just gets brought up to be like this.