Ok, I tried the Japanese ROM. my movie desync weirdly. I will have a closer look probably in the future. But an interesting thing to note. You have more health. You start with 6 heal on a maximum of 9.
EDIT: I imported the current any% TAS in bizhawk. It did not desync for world1. That can probably be useful if you want to work with TAS studio on it
REDIT
I managed to have a script to draw the map (colission) It's not really fully accurate but it make realise this
Because as you can see on
There are blocks here (the number it's because it a type of block I am not familiar with) The double hitbox on Mr.Nutz is not false. There is his map hitbox (how he interact with the map) and his dmg hitbox (how it interact with enemy)
REEDIT : The jap rom make you start with 20 nuts. Maybe it can be a time saver for the any% TAS