Are Macs Better for Recording Music? If so, Why?

Hey again, everyone.

I currently record music on Windows 7 using Pro Tools. It works great, but it's mainly for basic song ideas. One day, I think I will outgrow my current system and need to look for something more powerful.

What I'll want is a machine that is optimized for recording music at a somewhat professional level. I've heard allusions to the idea that Macs are better for recording music, and I'd like to know if that is the case. I'd rather not hear any anecdotal evidence. Rather, I'd prefer to hear factual arguments on why Mac is better for recording music than Windows 7.

It may be that the two do just as good of a job, but I'm just unsure of the case.

Are any of you knowledgeable enough to comment on what makes a Mac better for recording music than a Windows PC?

Thanks for reading, and thanks in advance for your responses!