It's a trick to get people buying this version for the helmet-less head because a future 200X Lyn will probably have more unique tooling like her bodice, skirt train, and kneepads, therefore something has to be cut. (Hey Matty fans, you should have bought BG Evil-Lyn because that's the only way you'll be getting a helmet-less Evil-Lyn!)
I might be wrong. They may have, for all intents and purposes, tried to pawn BG EL as a definitive 200X Lyn. All the Evil-Lyn talk is exhausting me.