There is a lot of tension. ~140kgf is for the good stuff. That is a lot of tension to get "slack" via rim deformation. That tension would never have been used on the old higher spoke count 32 hole deals. The Extralite take that no problem. I could not comment 1st hand on Campy. Still beautiful stuff, but as I have posted before...Sometimes you have to give up a bit of quality and performance if you want the very best.