In spite of all discussion about how broken 40k is, I think it is generally more balanced than CTA. All races have a chance against each other, while I think it is almost impossible for some matchups in CTA.
Dilgar vs ISA for example. Never a fun game for the Dilgar player.
IMHO ISA and Minbari are the two power fleets in CTA. (I'm not counting Gaim, as Mongoose have realised they are so broken they banned them from their own event.)