based just on the two videos/songs, commander is by far a better guitarist. Great Kat seemed like she did nothing more than constant power-chordish palm-mutes through the vast majority of the song. unfortunately the audio and video are a bit out of sync so even when they were showing her playing (rather than just posing and licking her guitar), it wasn't in proper time. *shrug*
So yeah, my vote goes to the first one as far as talents/abilities shown between the two tracks.