What is Da’as Torah?
It’s a combination of things which result in the words of talmidei chachomim having more import than those of a hedyot. It exists on different levels.
If someone learns properly, it should refine his thinking and emotions so that he can answer a question with seichel and objectivity. A true gadol does not allow bias to inform his decision, and has insight (to varying levels, depending on the level of gadlus) that a hedyot doesn’t.
I am not going to get involved in discussing who is or isn’t a gadol.