So much bad information in this thread. Sentinels do not have an AOE stun. We have an AOE disorient which is very different. I think sents are really competitive and really close. I think they could use one of the following things to really round out the class without making it overpowered:
1) Force push or pull resistance (active) - passive would be OP. For example 2-3 second immunity upon cast
2) A stun only usable at range (not force stasis which requires channeling). 10-30 meter usable.
3) A push or pull (I personally would love to have this, but I think one of the first two options are better)