Seems the filter's bypass valve setting is based on a combination of the vehicle's oil pump flow rating, and also on the design of the oil filter itself. IMO, it's based more on the filter's design than the vehicle. That's why you'll see a different bypass setting on different filter brands that are applicable to the same vehicle.
The filter manufacturer considers how much debris the filter can hold, how much flow resistance the filter has and how much total PSID the media can take when specifying the bypass opening pressure. You will however see higher bypass valve settings on vehicles with high flow oiling systems (like the Subaru) so that the filter doesn't go into bypass due to the higher PSID produced with high oil flow rates.
BTW - most top tier filters (when new) will only produce around 5 PSID with 10~12 GPM of hot oil flow (not many cars produce that much pump flow), so this is why you see almost all filters with at least an 8 psi bypass setting.
Most filters have a bypass setting somewhere in the range of 8 to 16 psi. Not many fall outside that range that I've seen. IMO, running a filter with a slightly higher bypass setting won't hurt anything ... but running one with a significantly lower bypass setting might cause that filter to go into bypass more often than it should.