cids ultamate weapon has no weapon growth and besides the striker is stronger then cids ultamate weapon.

and bahhemoth horn has an attack power of 91 im pretty sure and red xiii ultamate weapon only has a power of 93 or 94? so its not much weaker plau it has materia growth unlike his ultamate weapon.

and as far as the tonberrys into ribbons. you can get the 2nd ribbon before ever seeing a tonberrys and there not a bad thing to have at any point in the game.

and added cut does something different then 4x cut you connect it with another materia. only example i could think of is equip it with deathblow materia and youll attack then use deathblow right after. it has other uses i jsut cant think of any right now. besides i dont know about you but i like to master every materia in the game. i dont stop playing a game until i master it.