A good computer would have a fast processor, a current GPU and more than 16gb of RAM. That's universally accepted as to what makes a computer GOOD.
Apple has none of that.
By whose definition?
I am using a MacBook Air. It has 4 gb of ram and integrated graphics and it's an ideal laptop for me because it's thin and long and extremely well portable.
By your yardstick, the 21" asus predator laptop with dual 1080 graphics cards would be the best laptop available. But only a few people use it for obvious reasons. It entails too many tradeoffs despite its stellar specs on paper.
As raw specs become less meaningful in terms of differentiating performance, Apple works even harder to make their Macs stand out via non-spec related means, and I feel that is just as meaningful, if not more.