What else would it be? If my computer is faster, cheaper, and lets me accomplish the same things in the same amount of time, how could it be worse?
Seriously?
Let's just take the most obvious example then. One is a laptop, one is a desktop. There. One is "faster, cheaper and lets you accomplish the same things in the same amount of time" but one requires you to be tethered to a wall and the other doesn't.
If that example is too much of an extreme for you, how about a desktop replacement laptop? I can get a 11-pound beast that is "faster, cheaper, and lets me accomplish the same things in the same amount of time" than my MacBook Air. Good luck opening it and using it anywhere other than a full desk though.
A computer is not just a spec sheet, much like a car is not a spec sheet. If you don't value the differences that putting more into a car or computer brings, that's fine. However it makes you look pretty out of touch if you can't even see what others value in it.
Different people value different things.
Myself, I care less about specs than I do about weight, display quality and build quality -- I'll pay extra for those things too.
Other people might prioritize storage speed, and spend a fortune on the biggest possible SSD, even though the cost per GB might not be worth it to most other people.
If you are happy with a faster, cheaper computer, more power to you, because you're happy, and really, that's all that matters.
After obsessing over pc parts since childhood, these days I don't give a shit about specs and am happier for it - unless I'm trying to play Counter-strike, even then I only wish I could use my PS3 and forget about it :)