Not to beat the dead horse anymore than it needs to be, but I disagree with the Batman/Robin-Pt/Pikachu analogy. Batman fights along side Robin, which I have no problem with. Plus, Robin learned how to fight properly by watching Batman. The pokemon already have the fighting capability, they just hone their skills by being in pokemon battles, which the trainer presents to them.
ANYWAY. I think that the lag (if there was actually a substantial amount) could also work in favor of the PT. If you see Captain Falcon getting ready to Falcon Punch you, you could switch to a different pokemon, and if the lag was great enough, Falcon would miss.
Regardless, it does look like the lag is pretty minimal.