Phrased a bit differently,
You are saying that it is absurd to posit that R’ Shmuel Kamenetzky knows better than me & you who would make a better President, (on the contrary, you would even argue that WE are better qulified to make such an evaluation given our level of worldliness).
I’m saying that you are 100% percent right.
However those who ask Da’as Torah that question feel that R’ Shmuel Kamenetzky will know better than us who HASHEM THINKS will make a better president.
I think that they are 100% right.