Yep, I think you figured it out. I reviewed the release announcement where they published the performance chart posted above, and here's the quote:Dollar normalized appears to indicate they’re factoring in the price drop, not just the performance increase. That might explain why there was minimal improvement in some of the games you tested that were included in the presentation.
DX9 improvements don’t mean DirectX 11 and 12 get left out in the rain. Some games get a modest improvement of a few percent with better stability being the focus.
This chart was released the same day they announced a price drop.

Intel Arc Graphics Updates, New Bundle, and Pricing
Today we are excited to unveil the latest advancements in our Intel Arc A750 and A770 desktop GPUs.
