Re: wind style rasengan=to lightning blade?
not taking in consideration any nature advantage, don't think Kishi gave Sasuke any tech that could clash and equal in power with fuuton rasenshuriken like ransegan/chidori.
not that sasuke don't have an equally powerful tech, or even more deadly, cause he does (like amaterasu for example), they're just not suited to up against one another techs.
not sure if that was what you were really asking though.
and no, lightning blade does not equal fuuton rasenshuriken, even not counting with nature advantage.