interesting poll..
I would say no.
Off the top of my head I would point out the following franchises
Pittsburgh - more cups in the modern post-og 6 era
Islanders - had a dynasty + 4 cups in the 80s, more impressive than the rangers one cup post 1940 IMHO (worth noting I am an isles fan so biased)
Chicago - arguably a modern dynasty, more cups, especially more in recent memory
Montreal - do I have to even explain?
Bruins - More overall cups, another o6 team with more success in recent memory (won a cup in the 2010s, Rangers havent since the mid 90s)
New Jersey Devils - this one is subjective, but IMHO the devils three cups in the modern era is more impressive than the rangers one modern cup + 06 cups from when the game was radically different. NJ has won two cups since the rangers last, and had more finals appearances
Detroit Red Wings - long run of success, plenty of cups, including one in the 2000s (much more recently than the Rangers)
Oilers - similar to the Islanders, while they certainly have had some rough recent years, they are starting to turn it around and their dynasty years were undeniably impressive... several cups in a row
Tampa Bay Lighting - again this one is up for debate, but I put much more stock in cups won in the post -expansion era
Colorado - similar to Tampa I could see someone arguing that the rangers cumulative successes outweigh Colorado's, but I think the team they assembled and won cups with in the late 90s / early 2000s was very impressive.
TLDR - I don't put much stock in stanley cups won during the original six era. Rangers have won a single cup since expansion, many franchises have done better