here's the issue- junior said he wasted too much effort stuffing the takedowns and thus left his head vulnerable to being hit- he got smashed with that overhand and that significantly fucked him up and left him vulnerable to cain's onslaught.
but when has JDS ever really covered up well. he's always open to shots and he's eaten his fair share of solid punches. he just happens to have a strong chin.
so also the problem is that if he doesn't concentrate on stuffing cain then he will have to fight off his back. if he has some trips up his sleeve then maybe he makes life difficult for cain- using an active guard to threaten or attempt to sweep- controlling posture and thus minimizing damage. but you can't win rounds or the fight that way.
so junior's best bet is probably to bait Cain in early. the assumption is cain will be ultra-confident after knowing he could stand and hurt dos santos like no one's hurt him. if junior is able to capitalize on that confidence, he could assuredly tag cain hard again and rock the hell out of him. remember, we saw cain put an absolute beating on JDS for three of five rounds and not put him away. junior knocked cain out in the first. while this is no knock to cain, he won decisively and actually may have answered more questions than junior did, it still shows me that JDS may be the one who has more potential to put cain away than vice versa.