I noticed a few issues in the Additional Comments.
-The damage calculations portion are done assuming Level 100s. The damage dealt is slightly different when both Pokemon are level 50 like in VGC.
-The Garchomp Earthquake Calculation is for a single target Earthquake, but those rarely happen in VGC. So it might be better to change the example. Something like Life Orb Mamoswine's multitarget Earthquake, which is similar in strength.
-Based on the calculations, Rhyperior does NOT avoid a 2HKO from Meteor Mash since the Babiri Berry would get used up from the first Meteor Mash, which is guaranteed to do more than 1/3 of Rhyperior's HP.
Thanks for noticing that. I'll fix it right now.