There are 2 fallacies here in this thread.
1. Arm chips being superior to intel core chips as far as performance goes.
2. Cellphone chips being considered in the same type as computer chips.
When you realise why these assumptions are false starters, please reconsider why Apple should cripple their computers even further than the Macbook Retina toys are already.
Then consider what does Apple have to gain from losing it's compatibility with existing OS X and MacOS software.
Then consider why should Apple restrict the possibilities of performance, and have the worst of both Mac and iOS in a device that will not be able to cut the mustard as far as performing worse than previous models, and for a higher price.
Then feel free to make snarky comments about the world renowned cheapskates at Samsung who are noted for making flammable washing machines, exploding galaxy note 7s and other junk of even less quality than the iPhone 3GS ?