Both widely accomplished, published and recognized, particularly Dr. Evans
Please quote Dr. Evans that the texts differ in ways other than spelling and grammar? This is an argument from the back alleys of theological circles. It has no merit, and has only one goal: to discredit the Mesorah. And that one goal has a insidious and filthy motivation: to discredit the Masoretes - those "dirty Jews" messed with Isaiah 7 and Isaiah 53...
The Masoretes were meticulous in their copying. Their letter counts for each page put the Byzantine scriptoriums to shame.