1) it is not all about power, it is about reliability, user-experience and ease of use.
2) no Windows box can beat that.
1a) I agree
2a) Wrong, nice try
I've bought equal numbers of new PowerBooks/MacBook Pro's while concurrently buying new T Series ThinkPads since the advent of each.
ThinkPad T series are the best PC Laptop, & equivalent to PowerBooks/MacBook Pros. I've had every T series made and every PowerBook / MacBook Pro since the PowerBook 170 running system 7.
The first hand experience I've had year after year, using them for mission critical work reveals they are both stellar laptops. My current comparable models are both 2011 quad core i7 SSD equipped 15" MBP & T520. From Windows XP SP1 forward till Windows 7 SP1 of today, I've never had a single virus, worm, malware, BSOD or other annoyance. The same holds true for my Macs. Furthermore I've had less than a 5% hardware failure rate from either. One MBP, and precisely one T60 have each had hard drives fail. That's no reflection on Apple or IBM since obviously they obtain the drives from vendors. Out of nothing more than coincidence they were both Hitachis. A brand of drive that is top notch. I've had one PowerBook that had memory go bad, again no fault of Apple, and a T40 that had a memory slot failure, a part that also came from a vendor.
Considering the heavy, resource intensive work I do that's quite a good record for both brands.
If I had to buy just one brand it would be a tough call. It would also depend on the intended usage. If it was just for my personal use, hands down I'm a hard core Apple Laptop Enthusiast. I enjoy OS X beyond description. Yet to be fair Windows 7 Pro is one exemplary OS.
So that's my take on it.
You'll notice I have not mentioned price even though there's quite a gap. As far as my purchase decisions I base them on my needs and wants, not price.
I have never regretted any purchase decision of the machines I've outlined.
Cheers