[DarkHollowIchigo]

You have to know that these type of Juutsu can only be preformed by top notch S-class ninja's.

This is an all out going war, of course we will see unique technique's.

The persons preforming edo-tensei are not some low class nin. to begin with, i think the cheating death part is overrated, it's just that we saw it a few times, but it's not some juutsu that everybody can throw out of its sleeve.

That being said, Itachi countering Edo Tensei, hey....we are talking about Itachi here.