Power on arrest
Right, Natstrackalpha,
The wire not only has to absorb the kinetic energy, but also has to do work against the running engines.
The aircraft moves ~100m to stop (?), and has ~10 tons (?) of thrust, so the work done is ~10MJ: a modest, but not insignificant, correction.
You might not get a degree, but that's definitely worth some coursework credit.