I am using this option for the first time and I hope this is the right place to report it.
The Steel Wing attack on Scizor-EX seems to sometime not reduce the damage dealt by opposing Pokémon.
In addition, when I used it once against a Psychic Pokémon such as Espeon-Gx when the opponent attacked with Choice band attached and used Psybeam the damage was still 60!
It was supposed to be 20 after taking into consideration both resistance and the effect of Steel wing.
Please fix this bug as soon as possible, thanks a lot!
P.S. here is the Full Art version of the card for reference: