If you look at the VOA/UOAs posted, the PSF, especially if it meets Honda requirements, will need a pretty stout additive package.
There are plenty of benefits to synthetic PSF. Cold weather performance is improved. PSFs can run very hot cooking lesser mineral PSFs. If the additive package reduces wear, we'll have longer lasting pumps/bearings/racks/seals.... PSF is typically not filtered, not maintained, not cooled well.... a synthetic is a great upgrade.