Zero won, that's all there is to it. ESAM can say all he wants about lag affecting him, but to be completely fair, lag hits Sheik pretty hard, too. You need to have precise microspacing to play as a top-level Sheik.
But I don't think there's any conclusive evidence for Sheik beating Pikachu. An even matchup doesn't mean that neither side ever loses. Would have to watch the set to understand more though (see option selects etc.).
ZeRo thinks Sheik wins the match up mostly due to her having the tools to outcamp Pikachu then having better range on the approach.
Use a lot of crouch vs. Sheik and she won't outcamp you. Tjolts are also better for approaching. Do needles let you approach? Kind of. They do encourage shielding (or crouching/f-airing into the ground). But tjolts are better for it.
F-air does outrange Pikachu's f-air, though Pikachu's f-air and up-air are disjointed. D-tilt has more range than anything Sheik has on the ground short of f-smash.
Not to mention Pikachu's gimp game (one of his biggest strengths imo) is essentially nullified by Sheik's wide array of recovery options.
This is true, and is the reason that I think that Pikachu killing earlier doesn't matter as much as it would otherwise, since he has a harder time building up damage without offstage options. Do note that Sheik's own pretty decent offstage game is nullified by Pikachu's recovery too, though. You won't really be landing offstage bouncing fishes or f-airs on Pikachu.
Zucco's Mega Man also took out ESAM's Pikachu 2-0, though I don't know if it's that Mega Man actually has an advantage or if ESAM's playstyle didn't work well against tornadoes tornadoes tornadoes.
In my opinion, Megaman vs. Pikachu is in Megaman's favor. Again, I don't think that this set proves anything. Just my thoughts on the MU. Megaman has a lot of disjoints.
You haven't WiFi johned until you face a Samus.
And I bet everyone instantly formed a picture of a ball in their mind when I said that.
Yes, but that ball was blue and spiky.