Actually, it happened several times... in the case of the Nintendo game titles, the license switched from Coleco to Atari, which decided to put the two Donkey Kong games out with red labels (despite everyone already having it by then). As you saw, it happened to Exidy's Venture, where Coleco had the license first. This also happened to Parker Bros cartridges too -- Gottlieb's Q*bert, for example.
So yes, they are identical when it comes to the software.