Not saying it's not possible, but most people have issues in my experience. I am sure your friend is good (depends on ilevel you didn't say what ilevel they were), but there may be people who do more DPS than them so that 90% could turn into 100% and then they have hate. Yeah DRG could have used Elusive, I don't know if he did, he didn't say.
Still can't ignore the fact that a 20-30 ilevel difference does make it harder on the tank to keep hate. If the DPS you get is i200+ and knows their job really really well you may not be able to hold hate with i170-i180.