https://gamefaqs.gamespot.com/a/forum/4/465c568c.jpg
https://gamefaqs.gamespot.com/poll/2097-20xx-division-round-1-revolver-ocelot-vs-pac-man
Ocelot wasn't a unanimous favorite over Pac-Man (I believe a handful of people on the board picked the upset), but he was expected to win fairly easily, with the Oracle average being a little above 58% for him. However, the moment we saw that match picture, even the people who had been confident in Ocelot's chances (like me, one of the main people who had pushed for his inclusion) started to have doubts.
Those questions were validated right from the start as Pac-Man had a slight lead at the freeze. Ocelot took the lead back pretty quickly, but he couldn't get the margin above 250 votes. Right around the morning vote, Pac-Man took the lead and never looked back.
For the second contest in a row, the first round had ended on a big upset. However, unlike with Master Hand > Kuja, which had prompted angry reactions, most people were just happy for Pac-Man. Nobody seemed to mind getting this one wrong, perhaps because they knew it was only worth one point, unlike how many points most people lost with Knuckles > Magus.
Speaking of which, Pac-Man actually had a higher prediction percentage than Knuckles, although he did knock out the last remaining perfect brackets. The other characters from the Villains Contest seemed to get a noticeable bump in bracket support in this contest, but Ocelot was the exception, for whatever the reason.
Despite the embarrassing upset, Ocelot still managed to become a contest staple from here on out, only missing 2006 because of the male/female split. Probably the only contests where he came out a net positive were Villains and 2007, where he scored an upset on Jill Valentine (which he immediately returned the favor the following year despite the release of MGS4). Ocelot was often confusing but rarely was he not entertaining.
https://imgur.com/WqDcNNq
https://imgur.com/89Z5jrB