There is an in-depth comparison of the new MacBook Pro to several other high-end laptops at NotebookReview.com It is done by a person who uses both platforms, and seems well-balanced and informative.
Whether you are interested in switching to Mac OSX, or just curious about the new MacBook Pro, this is a good place to start. It comes with a chart (more accurately: several charts) comparing the new Apple model with other competing brands based on specs.
Here is a quote:
A durable lightweight PC is not cheap to assemble so it obviously isn't cheap to sell. If durability and portability matter to you than [sic] you are probably willing to pay a little more for it. If these characteristics mean nothing to you that is fine – you have tons of choices and none of them will be an Apple.If you are not interested in the entire article, there is a concluding summary, which does a good job of communicating the author's opinion.