Sometimes you know yourself that your regular Rov will not pasken a major shaila, so you go directly to a great posek. An example might be whether to r”l pull the plug on a ventilator.
If you know *for sure* that your Rav will send you to Gadol X for a question of this type, then fine. But the OP clearly does not know that if he is asking the question.
That being said, if he does not trust his Rav to pass the question on (or refer him) to someone qualified, then he needs a new Rav. He should not be asking strangers who is qualified to make a major life-and-death decision.
The Wolf