I've run that team, @RacerDejak. In arena it held on defense quite well before JTR came out. Now doesn't hold for me nearly as well as my vanilla NS team (zzMT, zDaka, zAsajj, Zombie, Initiate/Acolyte/Spirit). It's not huge, but it's the difference between dropping from 1-25 and 1-45. I think the effective -30 on speed you have from running Daka lead is a dealbreaker against top tier teams.
But yeah, in TW it's my hypothesis that that team is glorious on defense. (But since we have no stats, I have no empirical data to back this up.)