Combined with Druddigon or Lucario, it does 80 to the defending pokémon on the opponent's turn... that's crazy... but yeah, tool scrapper makes ACE Spec tools useless. Specially when you can only have 1 ACE Spec card in the deck and there's Computer Search.
Which, btw, makes me wonder why they bother to make so many ACE Specs when you can only use 1. Again, combine that with Computer Search's existence, and the result is most of the other ACE Specs won't be played. IMO, The rule should be "only 1 copy of this card", not only 1 ACE Spec card...