Re: sage mode rasengans
Ill put it simply:
-Rasengan alone, stationary. placed within hand, point-blank range.
-Fuuton: Rasenshuriken, it's movement is extended by the wind affinity added to it through nature manipulation, apparently, with wind affinity comes flight or the ability to "glide".
-Fuuton: Rasengan, this is the precursor to Fuuton: Rasenshuriken, it is merely a rasengan with wind affinity added to it, it is not shape manipulated to become the shape of a shuriken.
The Fuuton: Rasengan has the same capability of "gliding", theoretically, due to it's combination with wind manipulation; but, it is much less powerful than the Fuuton: Rasenshuriken and will not cause damage at the cellular level. (This is based on the clashing of Kakashi's Rasengan and Naruto's Fuuton: Rasengan...aka, the incomplete 1st stage of Fuuton: Rasenshuriken) (Kakashi's arm was not damaged at the cellular level as Kakuzu was, making this form less effective)
During the experiment Kakashi and Naruto made, the point was to see if the two jutsus would cancel each other out, Fuuton: Rasengan proved to be more powerful, wiping out the normal Rasengan and with it's wind-searing abilities affecting his arm)