OK, this maybe deemed as correct (The Montreal Canadiens being the most successful professional sports team in history), but how does their haul of trophies better Rangers?
According to
Wikipedia, they have won, overall, 53 trophies (24 Stanley Cups, 8 Conference Championships and 21 Division Championships). And they also cite them as "
the second most successful professional sports club in all of North American sports history."
Wikipedia also claimed the most successful sports team in North America is
New York Yankees. But even their haul was only 79 (26 World Series titles, 39 AL Pennants and 14 East Division titles).
Rangers have won 107 trophies (51 league titles, 31 Scottish Cup, 24 Scottish League Cups and one Cup Winners Cup in Europe).
I will agree, that to win the Scottish league is a lot easier than to win a tougher league (like the Premiership in England, Serie A in Italy or la Liga in Spain), but you can only beat what is laid out in front of you. And on that note, the honours won by
Real Madrid are also worth mentioning - 90 trophies (including, amongst others, 9 Champions Leagues, 29 Spanish league titles and 2 UEFA cups). And judging by the opposition they would have met, that is some tally.