I'd have to agree if you are talking value at low cost. I have been a Linux sysadmin for years. A couple years ago ops leadership decided we should all have macbook pros as our work laptops. I honestly have to say the mac out of the box is probably the best *nix sysadmin tool out there. There is broad support for the mac nowadays from third parties and a wealth of tools that run nicely on the mac that are like ice cream to guys like me. If you want X, you can have X, etc. etc. blah blah.
The thing is, it is 100% true that if I had to buy my own laptop, I would go with a year-old thinkpad and put any popular linux distro on it and be able to accomplish anything I had to when it comes to "work".
For example, Video is very smooth on the Mac, but I don't need that to get the job done. My job is 50% command line and 50% web browser so all I really need is a decent shell and a browser I trust that is compatible with the online software I use. Anything else is just extra.