By and large I think you are right. But I am also keenly aware that my opinion formed when I discussed the subject with Russian friends and family (and probably the same can be said for you). I've taken a college class on World War II, but I came into it with very specific beliefs, and so it doesn't seem terribly surprising that I left with the same beliefs.

It's not that I just have a bare, unsupported opinion in my head: if I wanted to, I could go on for quite a bit about the reasons that the USSR was crucial to the defeat of Germany while the US and UK played less significant roles. But I imagine the American readers of LW have equally good reasons why the intervention of the US made all the difference.

Really, the idea that this question is important to me troubles me more than the question itself, and I would rather work at disentangling it from my own identity than work at establishing the truth.