It seems that the Revolutionary Guard has some nasty weapons in it's armoury - so what? It's (almost)inevitable in warfare that even the most incompetent and disorganised opponents can land a few sucker punches and deliver a few nasty suprises. It doesn't mean they will survive to celebrate for long. The Revolutionary Guard may yet find themselves caught between a rock and a hard place, namely the US military and their own people. I wouldn't give much for their chances as it will be death by exploding technology or death by bloodthirsty mob/tribunal. If they are foolish enough to attack Israel or America they will be introduced to a level of force they have previously only seen in cartoons. Don't bother running you'll only die tired.
from the article: Revolutionary Guards: Iran can penetrate Israel's Merkava tanks