I didn't really test this combo, but the combo is meant to "emulate" screw/spiral capricorn, I have seen that it can hit very hard with a metal flat performance tip. This combo is based on two assumptions, wyvang's imbalance will allow it to replicate screw's charge attack(even with a R2F performance tip) and R2F is better than MF for this purpose as seen with he performance of samurai pegasus. The SA165 is very heavy, tall, and unstable, making it perfect for smash attack, and assuming the combo will move like samurai pegasus, it will be extremely destructive.