Are you viewing the image at 100% (1:1) magnification in both applications?
Sharpening should be applied (and evaluated) at 100%, any other view will be inaccurate and misleading because of image scaling.
And, does the image open in Camera Raw when you send it to Photoshop, or are you using the Camera Raw filter?
The sharpening is applied at 100 percent, viewed and compared at 100 percent. So that is not the issue. I am using the Camera Raw filter. Does that make a difference? How do you set it up to open in Camera Raw when you send it over to Photoshop?
If you use the same settings on raw files vs. rendered RGB files, you can and should always expect different results. They're very different animals and not directly comparable.
I think it's your computer problem .