Unfair comparison. The Windows tool (FTA):

“Runs a Windows message loop Has a title bar, minimize, maximize, and close buttons, which all work as expected Has a system menu with the same Paints the background and some text centered in the middle, equal to or larger than "Dave's Tiny App"”

That Linux program:

“Let’s take an incredibly simple program, one that does nothing but return a number back to the operating system”

See https://archive.is/w01DO#selection-265.0-265.44 for a fairer comparison (97/133 bytes)