Coors doesn't really taste much like Bud (or Bud Light). Coors uses corn as the adjunct, while Bud uses rice. The flavor profiles are very different.
They're similar in that they're generic American macros though, that's for sure.
I don't really understand what "light wine" means. There are some Italian and Sicilian whites, and some rose' wines, that I guess might be described that way. But it's still not really an apt descriptor, I don't think.