Musical Politics

From a U.S. News gossip column, via Kos:

Bushies say that several performers, including [Lee Ann] Womack, Randy Travis, and even 1970s rock band Foghat have offered to tour to offset Bruce Springsteen ‘s pro-Kerry tour with fellow performers Jackson Browne, Pearl Jam, Bonnie Raitt, R.E.M., and others.

Now, as Kos says, it’s rather obvious we win this round. But I have a different question: what possible quality is being flagged and highlighted with the use of the adverb ‘even’ in this context?