It's really funny whenever someone claims that healing requirements did increase. Because DRK totally wasn't soloing the stack tankbuster in P7S on day 1, right? Oh wait....

About the only mechanics that were actually tough to heal on minimum gear level were Curtain Call from P4S, Natural Alignment from P8S and Harrowing Hell from P10S (Maybe the Limit Cut intermission in P12S too). Everything else wasn't harder than ShB at all. I'd even go so far as to say that early weeks healing in SB was tougher because we had so much less to work with.