Those numbers are all over the place to be honest.
There needs some context because firstly the damage figures vary wildly based on how much mitigation you have. Secondly the "time between attacks" is a bit of a mess. The Basilisk hits me about every 2 seconds or so, not every 4 seconds (1:33:44, 1:33:47, 1:33:49, 1:33:50, 1:33:55, 1:33:57 for example). I don't know if they have tried to average the number of hits over time (such as when it stops for tail swipe or petrifying gaze).
I would highly recommend anyone that wants to really evaluate what is happening downloads Advanced Combat Tracker ( http://advancedcombattracker.com/ ) and break it down for themselves. A very, very useful tool in ACT is selective parsing that can give you a lot of insight into what is really happening.