Best info currently says, it's a Wix 'made for' WM filter, similar to/same as the Napa ProSelect/Silver and current MicroGard(ST has same published efficiency spec as MG line) filter line, at an every day value price. Like to see what the complete line up will look like, but looks to be a serviceable 3-5k mi oci value oil filter.
And as alluded to by others in this thread, the average/majority ST oil filter purchaser at WM couldn't care less about an efficiency rating, much less understand it. Even at that 'fwiw', still significantly better than the OEM Honda A02.