This is a weird issue....

BACKGROUND:
We build dashboards in PPT and use "Snaggit" to grab a screenshot of the PPT (while in edit mode). We place these screenshots in a webpage.

Because we are grabbing screenshots, it's important that all computers that display the PPT in edit mode show it at the same size.

ISSUE:
Two identical computers with the same screen resolution show the PPT (while in edit mode) at different sizes....even though they both say 100% zoom level. This causes issues because we can't mirror image size when grabbing screenshots.

Any ideas why two identical computers with the same resolution who show the PPT at different sizes even when they are both at 100% zoom?

NOTE: Both are set to 220 ppi in the advanced settings, though i don't think that should matter because that refers to output. Our problem is that different sizes are showing in edit mode.