I was explicitly pointing out the comparison to Tyranitar using its "third move" on Steelix and Lucario, with Rhyperior using its third move on Cresselia. Tyra's CBed EQ kills Lucario every day of the week and does 45-53% on even the most ridiculously defensive 354HP/548Def Steelix, a pokemon that, compared to Cresselia:
1) is guarateed to be slower than the pokemon its supposed to counter
2) has no way of recovering HP itself outside of Protect
3) cannot threaten to OHKO the pokemon its supposed to counter anyway (it does 52-61% on a CBed Tyranitar with its 207 Atk [4EVs] EQ)
Comparing this to Cresselia, who does 103-121% with its Grass Rope to max-HP/min-SpD Rhyperior even with just 4 SpA EVs for 187SpA, you can start to see what I was getting at. Cresselia takes 65-77% from the CBer in question's "third move" in MH, which compares pretty favorably to 45-53% or certain death when you keep in mind, as you must, the three points above, and also both that MH can miss where EQ will not and "lol Steelix" in that Cresselia is generally expected to be more useful in DP competitive play. (and rhyperior's SpD is 146 min not 156)