Rinnegan Sasuke would overwhelm Juubidara in terms of speed and reflexes with Kenjutsu, but he loses both scenarios because there's literally no way Sasuke can dispatch of Juubidara. The same applies to Scenario 2 except this time, it's an utter rape fest when Limbo's survivability is significantly higher and would therefore, eliminate all of Sasuke's Kage Bunshins which would eventually allow Madara to gang-bang Sasuke. Aside from that, Sasuke cannot damage Limbo clones nor Juubidara to begin with, so he gets his shit kicked in regardless.