Hmm, yeah I guess you are right. I hadn't taken a close look at the 2.5L turbo filters, which are indeed Tokyo Roki.
Subaru does use Purolator as an OEM supplier, though, for their non-turbo filters (and I could swear the early versions of the 2.0l OEM oil filter was also Purolator).
Either way, its almost a moot point because in both scenarios, the OEM beats out most standard replacement filters.
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While a standard engine is powered by a belt connected to the crankshaft, a turbo engine runs on its own exhaust steam, making it more energy efficient. -- CNN
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