RProgN 1/2, 4 bytes / 2 versions. Score = 2

1 1+ 

RProgN1 requires commands to be split into words, where as RProgN2 reads byte by byte by default. As such, RProgN1 can't do anything with 1+, so it just outputs 1, but RProgN2 can execute it, so it adds 1 to the 1, giving 2.

Try RProgN1

Try RProgn2