Tyler improves his pedalling the traditional way; fixed gear riding in the winter/spring - no Power/Rotor Cranks for the Champ.
And one for technology…
Bobby Julich scored a bronze using these babies.
More here: http://velonews.com/tech/report/articles/6807.0.html
Interesting - seems like they do the same job as RotorCranks? (But cheaper and less weight).
From the article (following the link above) :“riders favor the rings for climbing, and … heavy-power flat stages (i.e. TT).”
Will this be the same for Rotors? (I can’t imagine that an oval ring or Rotors would be usable for myself, spinning with a cadence of 105)
They’re more like super “Bio-Pace” chainrings - akin to the ones we saw years ago, only with the elliptical shape even more pronounced. And filled in (like the DA ring) to look cool, I guess… 
as a former mapei rider bettini has used powercranks considerably . . . . . . . . . . .
:“riders favor the rings for climbing, and … heavy-power flat stages (i.e. TT).”
Much the same as for Rotor Cranks, however these chainrings do not work at all like Rotors. They do not eliminate the dead point.