DirectX7 Emulated In Vista?

I just read elsewhere, that DirectX7 is "emulated" under Vista. Had anyone tested frame rates, etc, on Vista compared to XP? Looks like around a 20% loss in render speed based on a few posts I've read.

Don't worry about it. Anyone running Vista is bound to have a 20% more powerful graphics card, so it evens out.

its not emulated, just call wrapping.
The impact is inexistant, tests with B3D have shown that vista is en par if not even faster with DX7 rendering.

ok... I feel better now. :) :) :) Thanks.