I haven't played the Gaim yet, but I have seen their fighter swarm hit the Narn. Not a pretty sight, and not one I'm looking forward to.
I'm bringing Dilgar. My biggest fear is Minbari, not Gaim. I just played a 5 point Battle. I could not see them. I had a Pentacon of 3 Targraths, an Ochlavita-Ki and a Jashakar Vi hunting down a Tinashi, but didn't see it once! 4 Omelos and another Vi hunting down the second Tinashi. Couldn't see that one either! They both spent the first two turns hiding in a dustcloud. My Tikrit was blown away in turn 1.
Soul destroying defeat, especially as it was a campaign game, and I now have almost nothing left.