I understand there are some AR10;s that are very reliable but I am sure we are talking about the top tier ones where as AR15's you can get even entry level ones like the Sport 2 that is very reliable, at least mine is.

Why if that is true AR10's are prone to misfeeding as I read many times chambers are too tight. Is it possibly because the bolt is just too big?

Even Windham's SRC .308 which has a great reputation, one reviewer said his misfed a few times. It just seems the AR15s work better and are more foregving.