Round 1 is the only round close enough to be questioned imo.
Rd 2 - Yan's easily but not 10/8
Rd 3 - Yan got 2 TD's but didn't do anything with it. meanwhile he got outstruck & got a major laceration & was bleeding all over the octogon... which is the highest of judging criteria. No way Yan getting 2 TD's equates the damage he took.
People see Yan pushing the action in the center of the octogon & putting O'Malley on defense with his TD attempts & then laying in O'Malley's guard when he got the TD... & feel like Yan was the aggressor. Okay, fair enough, but you only get credit for aggression... if "all striking & grappling are indistinguishable."
Every sofa-judge... (& even some of the actual judges...) need to really wrap their heads around how "lay & pray" is scored. Unless you advance position, threaten with a submission, or land strikes from the top, your only credit for the whole time you went for the TD & then just layed there... is for the TD only.
"holding the center" of the octogon scores 0... Holding someone against the fence, and/or "attempting" a TD that puts your opponent on defense scores 0. Laying & praying scores 0.
The TD itself is a significant & proper credit... but O'Malley boxed up Yan in the 1st & landed the heavier strikes... & even did a sweet shot that took Yan to his knees where O'Malley circled to Yan's back. So this was very far from a robbery.
Basically this whole subject is about whether or not Yan's TD caught him up to being outstruck by O'Malley. I say no.