The NTW Line Fusiliers have the same shako as the 45e, you're likely confused by the fact that the chinstraps are placed upwards in NTW, while they are lowered in NW.
The biggest change here is the fact that those Fusiliers have the pre-1812 long tailcoat while the 45e in NW have their model 1812 Habite veste (a shorter closed coat)