Not quite as simple. High power mode does help some but the 14" still only gets about 1/2 the power budget of the 16". You can get the temps down without too much of an issue but that doesn't help in certain workloads when its power constrained where the 16" has an extra 25-30 watts of headroom.
How much of an issue is the lack of power headroom if we're just talking about the Pro chips instead of the Max?