Yes, I understand that and we have our own problems this season. Still, while Iowa looks out of reach this season, Wisconsin does not. What happened 15, 10, or even 5 years ago is not relevant to this season. I was not very surprised at all when we beat them in 2018 because our defense, which had been shredded throughout the season, played two very stout games going into that game and Wisconsin was only 7-4 with their 7 wins coming against opponents with a collective winning percentage of something around 38%.
Their fundamentals don't look so good this season either. They are dead last in the league in scoring per game (18.5 points per game - the only conference team below 20 points per game) and their yards per play gained is also dead last. While their defensive yards given up per play is very good (4.3 yards per game; tied for second in the league), their points per game allowed number is ranked #12 (ahead of only Northwestern and Indiana). I know schedule matters and they've played a good one but still.