Actually it is much easier with the crush sleeve, thing is you probably don't do enough of them to see it, with the crush sleeve once you get within 8" lbs you make very very little increment turns, like 8 degrees, then rotate the pin a good few revolutions, recheck pre-load and if it's off a little lets say 4" lbs make a 3 degree pull.
It is very easy to go to much it's very little movement of the nut at that point.
The shims are more time consuming as you need to go totally apart and back together again and sometimes you need a .0015 difference to get it perfect and that turns into a sob problem.
The only thing i see with the shim over the sleeve is changing end yokes, it takes out all the care and makes it a stupid person replacement part. Knock the nut off and remove old , put on new, tighten nut back to 250/300 area and have a nice day, that doesn't happen with the sleeve.