The quality of winning (as opposed to
winnage, which is the result of winning).
Guess what? They tweaked the microcode and now the LISP interpreter
runs twice as fast as it used to.
That's really great! Boy,
what winnitude!
Yup. I'll probably get a half-hour's winnage
on the next run of my program.
Perhaps curiously, the obvious
antonym ‘lossitude’ is rare.