Apocalypse Oracle + Poised Bearing

[Echoen]

I will be playing a Fighter/Oracle at high levels and would like to clarify a feat/class feature combination.

Feat: https://www.d20pfsrd.com/feats/armor-mastery-feats/poised-bearing-armor-mas tery/

Class feature: Unstoppable Overrun (Ex) You can attempt overrun combat maneuvers against opponents that are up to two size categories larger than you. At 5th level, you gain Improved Overrun as a bonus feat. At 10th level, you gain Greater Overrun as a bonus feat. You don’t need to meet the prerequisites to gain these feats.

As a Medium creature with Poised Bearing (and Imposing Bearing later), I count as a Huge creature for bull rush, drag, overrun and trip.

With Unstoppable Overrun, I can attempt overrun combat maneuvers against opponents up to two size categories larger than me. Would I be count as Huge, and therefore be able to overrun Gargantuan and Colossal creatures?

[blahpers]

Yup.

Poised/Imposing Bearing are effective size increases for the purpose of determining what you can overrun. Unstoppable Overrun changes how far above your effective size you can overrun. Have fun trampling great wyrms!