OK this isn't a direct comparison, but it might be interesting for you.
I recently ran two rigs in parallel at a festival:
SPCMC2(cards)>SPSPSB1>NomadJB3
SPCMC6(hypers)>SPSPSB6>NomadJB3
For the "indoor" tent, the CMC2s ruled, sound was crisp, and full. The Hypers gave a clear sound, but lacked bass, and midrange.
For the outdoor stuff, the CMC6s worked a treat, CMC2s were muddy. I've just seeded a Status Quo* recording over on the Dime, with a Thunder show to go.
* no jokes necessary, I know full well they are a cheesy rock band.
Not compared the CMC8 Card caps yet, as the rig is on loan and the guy I'm borrowing them from can't find them right now!
Humbug