This is similar to all those people who show quicker learning times for learning how to fly after playing Microsoft Flight Simulator. There are a number of studies being done in the Air Force where high-end machines equipped with MSFS and a planes that match the ones that are used for actual in-air and simulator practice and they're noticing that the students that spend the time "gaming" are quicker to learn cockpit instrumentation locations, how to read the instruments and how to operate the controls.
It's a leg up over someone who goes in never having any sort of practice before entering flight school.
So it's not surprising. Some of those Wii party games require a pretty precise set of motions to achieve the game objectives. Which is again very similar to what they have to do once they get their hands on the laproscope controls and the additional practice gives them a leg up on someone going in bline with no practice on remote, precision movements.
They ought to start thinking on how to incorporate such game-like training into any training program that would benefit from such practice.