Also, Swiss French, which has proper words for seventy and ninety, is considered more complex than French French, even though I'd consider having specific words simpler (especially given the complexity of 97 (which is said as 4 x 20 + 10 + 7)
1. (most complex)
19. French
33. Swiss French
69. (simplest)Before the 1990s there were also all sort of over-complicated hyphen rules. Thank god it's now simpler; hyphens everywhere.
See what happens when you're used to a saner numbering system? I always hear "soixante ..." and my brain goes "6... something" :p