Where can I find a really good comparison of the various development frameworks?

I've been Googling .NET vs Java vs PHP vs. Rails, etc. and everything I find is blog post diatribe flaming one framework. I have found a couple of pretty good comparisons, but they're very old. Even when I search YC, I'm still not finding much other than brief discussions.

What I'm looking for is a white paper style analysis that digs deep into the issues. What are the true pros and cons? How does it vary between applications, for example, if the application requires rapid scaling to support tens of millions of users versus an application where there will be only a few thousand users but there will be monthly releases of new features?

The people I talk to are mostly saying that it doesn't really matter; or rather what matters most is the skill set / experience of your team. Is that true?