Metagross is still outsped by a scarfed dugtrio and at least 79%ed from an earthquake since an adamant bullet punch will not 2HKO if you invest at least a few defensive EVs.
Jirachi is almost OHKOed by an EQ, and despite taking the predicted iron head and not dying, I can easily switch to something like scizor,hippo or whatever which can set up on the locked in Jirachi.
Bronzong is a simple case... night slash to get some damage off and then see what happens next, responding to the incoming EQ/Gyro Ball or Trick, by switching to something like Hippo or Scizor (yet again). This is why Dugtrio and Hippowdon makes for a great synergetic combo. Duggy takes care of standard leads, then hippo takes care of the trickers by walling them and getting rocks up. Complex to understand, I know, but it's effective once you see it play out.