I once watched a fight with my wife, who dislikes boxing. It was De La Hoya -- Mayweather. By the 8th or 9th round she was cringing, wincing. "Who do you think is winning?", I asked. She said, "Are you kidding? Mayweather is killing him. It's hard to watch." My wife, with zero judging experience, was better than a professional "expert" sitting at ringside that night. Question: If three 10 year old girls chosen at random from the world's population were given a 5 minute instruction on the rules of scoring a fight and then were shown the tape of the PW/Lara fight, do you think all 5 would get the outcome correct (Lara UD, obviously)?
Your wife probably doesn't score round by round. It's like with Calzaghe-Hopkins, as an example. If you watch the entire fight and think "who got the better of the other" I think most would agree that Calzaghe probably deserved the nod. However, I scored that fight for Hopkins 115-113.