Indeed, I didn't purchase it. I used the Macbooks at work. I like the OS and love the touchpads. The apps I use are heavier than what you've described--in particular, Unity3D, Firefox with a million tabs, and Chrome with a million tabs. (I also use Xcode, but I've found it's not resource intensive except when compiling.) Even Skype seemed to demand unreasonably high resources at times.
My new computer, a solidly middle of the line MSI (obviously I mean quality rather than specs), doesn't even turn the fan on full power during normal usage. This computer isn't throttling unless the drivers were specifically written to pretend it's not hot. And when I max out the CPU, the fan runs on high and blasts out a ton of hot air. The cooling system appears to be solid. It's certainly possible that it throttles during extended periods of 100% CPU usage, but if so, I guarantee Macbooks will perform even worse: either they cannot dissipate this amount of heat, due to not having a powerful cooling system (and so they will throttle), or they will dissipate the heat directly into my lap/hands/wrists, since I AM THE HEAT SINK connected to the computer's aluminum body. Either way, it's a pretty bad result.
I have a Thinkpad that's even older than the MBP. It gets just as hot, but it has much higher specs relative to its age (excellent CPU and GPU at the time it was bought), and it has its own bells and whistles, like the fact that it can survive liquid being spilled on the keyboard. And I can easily take it apart to clean the heat sink and keyboard. So as you can see, I have more experience with good laptops brands/lines than bad ones, and when comparing only the good products (for example, not Dell, not Ideapads, nothing from a "budget" line), the Macbooks still cost twice as much to get similar specs and features. (Again, I'm comparing laptops to laptops, not ultra-portables.)