ACR tweaks not as strong in PS CS4

A weekend ago I thought some of my RAW tweaks were not as strong as I made them, but it was getting late and I shrugged it off. While working on a new batch of photos converting RAW to jpg in ACR, I could tell for a fact that my ACR tweaks were not being preserved 100% when the file is sent to PS CS4. Attached you can see the same image open in CS4 and Bridge that shows the stronger tweaks. (Bridge is on the right).

Is there anything to do to make PS CS4 receive(?) the full changes made in ACR? It's like CS4 is showing maybe 50-70% of the tweaks' intensities. I typically boost the Saturation from 0 to 9-13 and the Blacks from a default of 5 up to 8-10. Over and over I see where my changes are not transferring over completely when the file opens in PS.

Any help is appreciated.

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Compare images in different viewers at 1:1 view. The difference in sharpness is probably caused because you are at "fit to screen"
Check your PS color settings.

www.getcolormanaged.co​m/color-management/pscolorsett​ings/

Thanks! It turned out Bridge was defaulting to Adobe RGB Colorspace, and PS was in sRGB.