Not just "considered by many" but "proven"
If your manual says GL4 or GL% the trans uses carbon fiber syncro rings, not yellow prass. You can then use what you like. My Ranger has a Toyo Kogyo (Mazda) trans that specifies Mercon or Dexron II fluid - and Mercon V makes it shift like CRAP - For a short time Ford had said to use MerconV in all their transmissions formerly using Mercon - but not long after recinded that for the M50D.