A part of me wants this to be true because Samus was my favorite, and Sheik my second to play as. I also don't want this to be true as I really want ZSS to have something even more original to her past the method of transformation.
But if you start a side by side comparison, the supposed paralyzer shot would be similar to the daggers. Presumably quick, charge-able and weak. Close range whips. Fast melee attacks combined with a light character. The only difference issue I see regarding this theory is how ZSS Up+B will work. Oh, and obviously down+B since Samus lost both screw attack and bombs.