One thing is for sure I could say: Raonic is really vulnerable against aggressive shotmakers in a good day. What is worse, are aggressive shotmakers that have good serving days, and the worst could be ones have a good net play day.
He's weak in particular against lefties. Always has been (Nadal, Nieminen, Melzer, Verdasco have posed serious problems among others). They can more easily punish his FH side which he leaves open when he runs around the BH. For whatever reason, Milos didn't give two shits about this match and kept laying the ball up for Panfil's FH (when he wasn't hitting unforced error after unforced error). The guy, to his credit, went for his shot and wasn't missing.