or it could be the fact that you don't have to install an antivirus. I have a Dell at work and the company policy is to have mcAfee installed. It prevents a lot of stuff from working (need to use virtual box 4 for example)
I have McAfee on my work Macbook, but I don't have an opinion on whether it's "less broken". I used a Windows 7 Thinkpad before the Macbook (also with McAfee), and didn't notice McAfee at all in these 3 years. In 2 years on the Mac, I noticed one interesting UI bug where the taskbar icon says "Your Mac is Not Secure", but when you click on it to open the main UI, the window will say "Your Mac is Secure", and the taskbar icon then agrees with the main window from that point on. Just a glitch, nothing that I would consider noticably broken.