What an interesting combination - maybe I am being naive, but I don't think the bands share any members? And the music isn't exactly in the same genre even...
Both great classic rock groups, I like a lot, although I must admit the only song I really REALLY like by Bad Company is, well...Bad Company.
Joe Walsh though...Rocky Mountain Way, Life's Been Good......absolute classics
I just don't see the two groups being on the same level really, I feel like it's almost like The Eagles going on tour with George Thorogood...haha
But I'm sure it will be a sick show either way, enjoy it man!!! Cheers.