Yes I also noticed how he said that Cain has great training partners, and then, kinda like just to be polite to his training partners he said "I have good training partners too".
Didnt he also say how Cain had the luxury of having a TOP 3 HW in Cormier as a teammate to help prepare for the fight when Joe Rogan was interviewing him? And then in a 'by the way" kinda way said he did too. Just seemed like he was annoyed that his teammates weren't that good enough to help him prepare.
To be the best, you need to train with the best. I dont know how much JDS trains with other other fighters, or if he brings anyone in to help him prepare, but he can't really rely on Big Nog for his BJJ training or Lil Nog, who is always injured. He's gonna have to let go of his stubbornness that his boxing coach is the best (I'm sure he is to help beat other HW but not Cain).