AE groups in Chardok – tactical question

[gwideon]

Gnomish Greetings!

When I did AE on live in Sebilis we always used an inside corner to AE the mobs. The enchanters would wedge themselves in the corner in order to have the greatest chance to channel through the hits – because the mob was less likely to move them. The wizards would use Thunderclap to faced toward the corner to push the mobs as far in the corner as possible so that the puller had more room to arc into the AE range with more mobs.

The times I have been in Chardok the AE groups have used the outside corner by the entrance. It would seem to me that the enchanters would have a higher chance of being pushed along the wall and be interrupted than they would wedged in an inside corner. Why do they do this? Is there a problem with the zone that makes this a better tactic in Chardok?