While that isn’t in newer expansion areas, that is great performance.
Also, Dragonflight is really optimized for AS, and you may not lose much or any performance when you start questing there.
Now, future expansions might change things, but for right now, the 30c is overkill for WoW, let alone the 38c.
When it comes to thermal throttling, the 38c might be worse on the 14” than the 30c. So, switching might actually not give the performance increase you are looking for.
Oh yeah, I also forgot to say that with my Mac Mini, the performance I posted was with on a gaming monitor, 2560x1080 @165Hz.
So not an exact comparison with the MBP.
There is a lot of graphical settings that are not tied to the preset bar, so if you want to play with the others, it may improve how it looks, at the cost of frame rates.
Those other settings will most likely get your fans going though.