Red Ronin(Vargas behind the controls) vs Sentry

The Reflexes and fighting skill of Vargas add to the weapons,strength & durability of Red Ronin is taking on Sentry

Vargas- http://www.marvel.com/universe/Vargas / Red Ronin- http://www.marvunapp.com/Appendix2/redroninrobot.htm

hasnt the sentry allready taken on red ronin with the inhumans?

Not sure

Who was controller in Ronin fought Sentry?

i dont think it was expliciitly show as it was in the new avengers civil war tie ins show in flashback