I'll be the voice on the other side, I guess...
Archery is better on Corrs than Defenders, yes, but then again, *most* blast sets are better on corrs than defenders. Defenders have much more potent (de)buffs than Corruptors, however, and this can be a game changer.
I've got both a TA/A (50/T4'd) and an A/TA (34). It is hard to compare them because the Def has been 50 for a long time, but I do think I enjoy it more than the Corr. I want to take the Corr to 50 and IO him out so I can get a fair comparison of the two sets though.