That article is a bit dated- Dexron VI is the new king of shear stability. Time marches on... everything gets better.
I have to laugh at the prior article extolling ATF+3 at the bottom of the page. That stuff was absolute swill with about a 40k mile working life before the friction modifiers were done and torque convertor clutches started shuddering. If ATF+4 had been available from the start of the 41TE transmission in 1989, its reputation would probably be merely "not a great transmission" instead of "sucktacularly wretched."
