The only argument is that the sig strikes are in Omalleys favour in round 1. When you actually watch the fight (first round) and realise they credit Omalley with a 23 sig strikes of 23 strikes landed in the first and Yan with 19 of 28 strikes, you start to assess who was actually landing big strikes in that first round. Omalley had every pawing jab and little leg kick as he was backing up scored as a sig strike. Then you actually look closer at it and realise that Yan actually landed more sig strikes, the better shots AND managed to take Omalley down, control him and land offence from there.
Then you add 3 separate fouls, eye poke, glove grab and fence grab with no deductions. Add to that it was in Abu dhabi when the UFC was still managing the commission and you realise why it was such a major issue at the time.
1 good round (which was actually pretty even in terms of actual sig strikes landed, without the UFC padding stats,shouldn't win a fight especially when the most significant moments of that round that are used as a highlight reel involve blatant fence grabs immediately after being warned.
What this should have been is a good performance by OMalley but a win for Yan. He landed the bigger shots all fight, outwrestled Omalley and Omalley got away with more fouls than Mcgregor did vs Khabib. Herzog was worse than Herb Dean was in this fight.