Has Apple ever designed a product solely around just a couple of specs? No. Consumers unfortunately fail to realize this and compare A vs B based on cherry picked specs. The reason you can't get a top of the line CPU and GPU in the MacBook is that Apple would then have to increase the price past the point which the machine would have broad appeal, or make concessions in other important areas.
What are those important areas?
- Speakers, Mic, Webcam
- Trackpad
- Aluminum chassis and form factor
- Touch ID
- Mac OS (like it or not, this is perhaps the most important feature for those considering Macs.)
It's very possible the competitive landscape has changed since 2010 and they are placing more focus on these ancillary features than before, but the strategy has always appeared to be to deliver a superior holistic machine. I, and their financials would argue they have been doing that from before 2010 through now.