I dunno. It's probably a complete standard deviation difference.
Toronto is 9 points of wRC+ better this year.
Seattle is 9 points of wRC+ better than the CUBS, who are 20th in offense.
So the gap between Toronto and the Ms is as big as the gap between the Ms and some certifiably below average teams.
Seattle is a tier 3 offense. They are in there with teams like the Twins, Phillies, Brewers, Red Sox, Rays.