FlyingSucculent says:
Does using an item effectively replace the ATTACK roll? If you succeed at the ATTACK but fail at the item roll, do you still deal damage? If you succeed at both, do you deal twice the damage?
Pira’s item can be used without attacking, or you can make a regular ATTACK and then use the item to roll SHREDDING FURY and/or PIRANHA SWING.
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My thought is that if you combine a regular ATTACK with 👠SHREDDING FURY, it’s like Chun-Li doing her punch/kick combo before using her super move.
If you MISS, it’s like when Chun-Li’s opponent blocks. The super kicks chip away at the opponent’s health bar, doing less damage, but not none.
If you HIT or COMBO, then roll SHREDDING FURY, it’s the same as Chun-Li doing a combo and linking that to a super combo. It hurts more.
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Bear in mind, in a Street Fighter game, you would know whether you hit or miss before you decide to use the super. Likewise, in this game, you can decide to whether to use your 👠
after you know the result of your attack roll.