I rate Bane a good step above MPJ at this point.
Offensively, I think Bane has an advantage in that he is better at creating his own shot than MPJ is. MPJ relies more on team offense to get his looks from. Bane also has more ball-handling and passing ability than MPJ. So a good advantage offensively for Bane over MPJ.
Defensively, Bane is a solid defender. Not the quickest or most dynamic athlete but good size with good strength and plays with commitment on D. Solid defender. MPJ unfortunately is still a below average defensive player. Perhaps a well below average defensive player. So again, a good advantage for Bane.
So I would see this as lopsided in Denver's favour.