Why your cloning makes a difference too, I was planning a SOG this grow but as a experiment I used the AZO's method 6 in rockwool and 6 in rapid rooters all under a dome and all 12 failed (1st time ever) so it screwed up my grow schedule for flipping the lights in the grow room. Adding a week to the RDWC veg  time can cause problems. I think that is the way RbtAsq grows also so reducing the risk is important.

From what I am reading here and past experience is making me wonder if the rapid rooters and rockwool keep the stems at the than a stem hanging in a mist. I dont know, great question though