Touch Bionics has i-LIMB bionic arm to go with your bionic hand

The mad scientists from Touch Bionics are at it again. After delivering their i-LIMB bionic hand last year, they're moving on up the, uh ... body and are announcing their sophomore effort: the i-LIMB bionic arm. Like their bionic hand, the arm is controlled via learned muscle movements picked up by electrodes placed on the user's chest and is covered in a "realistic cosmetic skin." The only real problem with the i-Limb bionic arm isn't so much a problem in our books, as it is an advantage: it's stronger than your old-fashioned human arms. Of course, with that power comes a whole bunch of ethical and safety concerns. Is there an ethical problem with exacting revenge on that arm-breaking arm wrestling arcade game?