lifted from a completely different thread here is a quote from Graham PM.
"...In QXP 8 and all previous versions, the preview for the EPS was taken from the PICT or TIFF thumbnail present in the EPS file. Those previews are usually pretty crude, mostly indexed RGB images. In QXP 9, the actual EPS is rasterized using JAWS: this results in a high quality preview..."
what isn't clear is where JAWS draws its color managementsettings from.
I should also mention the thread was talking about Illustrator EPS files, it may be that Photoshop EPS are treated differently[W]