lol sailor moon was the 2nd most popular 90s anime in north america
The most popular ones were Pokemon and DBZ. Or are you not counting Pokemon since it's originally a videogame? Sailor Moon was fairly popular, but it was never anywhere near as big as DBZ.
Yuu-Gi-Oh came out just a few years later, and it's loads more popular than Sailor Moon ever was. Actually, Digimon came out in the 90s, and I'm pretty sure it was bigger than Sailor Moon ever was. The first Digimon movie came out in US theaters in 2000, one year after the first Pokemon movie in 1999.
The first Yuu-Gi-Oh movie came out in US theaters in 2004. DBZ Fusion Reborn and Return of Coola were shown as a double feature in select US theaters in 2006, and all of the movies since BoG have come out in US theaters, too. There's never been a Sailor Moon movie shown in US theaters.