I recently played in a store "learning tournament" (180pts with no objectives and lists limited to the content of 1 core set). There was a good mix of imperial and rebel players so there ended up being a fair number of mirror matches. However no one brought a Vic I. My thoughts so far have been that the Vic I is meant to tackle larger, slower ships because any rebel player worth his salt wouldn't let his small base ships get within short range. But I haven't seen any Vic I vs Vic II match ups to bear this theory out.
If anyone has played a game where a Vic I went toe to toe with a Vic II I would be curious to hear how it turned out.