hmm ok i searched briefly but gave up. anyways, all i can tell you is that when he's not testing new skis, seth skis the obsethed that is sold in stores. period.
Regardless, to the OP- the obsethed is a super fun ski and the one i use as my "everyday" ski when not skiing park. if there is a ton of fresh i'll ski hellbent, but on those other pow/ in-between days, the seth charges. holds edge well, floats, and the all terrain rocker tail is like a landing platform and won't banana peel out like other soft rockered tails. basically it is very similar to the float of the hellbent in the nose with all the stability of a cambered ski (yet still a bit of the ability to scrub/wash turns or stay nimble in trees) in the tail. I skied the opus once, and i thought it was a fun ski, but it seemed better for variable snow than the super deep. its low-pro tip seemed like it wouldnt float as nicely in the super deep. yeah, pollard skis pow with it and 180s into pow, but he could probably 180 into pow on a pair of doors. in the end, you'll enjoy either ski, but i think the obsethed would be better for japan's deepness mixed with australia's variability.