There are plenty of examples of Maxlife ATF being used in WS spec'ed vehicles without incident.
While this is anecdotal evidence, there is a lot of it.
I decided a while back after a lot of reading and research to use Maxlife ATF in my Scion that is a WS vehicle. ~4 qts drained from he drain plug and same amount of Maxlife ATF added. No problems in 10,000 miles (actually seems to shift a little better).
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1994 Honda VT1100C: Peak 15w-40, Tough Guard, 3k mile OCI
2002 Ford F150: Havoline HM 5w-20, Ecogard Filter, 5k OCI
2012 Scion xB: QSUD 0w-20, Car Quest Blue (Wix) Filter, 5k OCI