Pixma MG5721 - Scanned Documents Font Size

I use Windows 10 and printer Pixma MG5721.

When scanning a newspaper column using U Scan Utility, two scanning options called Document PDF and ScanGear appear.  When scanning using Document, the scanned font size is larger than when using ScanGear. 

I also note when using other scan options, the font sizes on those options are also larger than ScanGear.

Is this normal?  If so, do you know why?

Thanks,

Jerry