Here's the issues I see here - we have a Japanese wrestler with relatively little experience against western opponents against a north American wrestler with no experience against Japanese opponents. Then we have the difference between these nations philosophy on the sport - the Japanese being more wrestling based versus the WWe's sport's entertainment slant. As such, we are looking at two of the very best in their respective arenas.
Generally, I would give the edge to the western superstar because the WWe is a global entity on a much larger scale than their Japanese counterparts... however, I am going to make an exception here simply down to the sheer longevity Toyota has displayed and her consistent time on top - Manami is approaching quadrupling Trish's career and showing no sign of stopping. That deserves my respect and vote.
Vote Manami Toyota.