There is no way Todd Bell was the best player on the 1984 Bears defense. I think that team still holds the NFL single-season sack record. Dent had a huge year with 17.5 sacks. Hampton also had a huge year, getting 11.5 sacks from his DT spot and earning 1st team All-Pro honors. McMichael also got 10 sacks from his DT spot. Singletary was 1st team All-Pro. So you have three Hall of Famers in their prime, two of them earning 1st team All Pro, and the third leading his conference with 17.5 sacks. But you're right, Todd Bell was the best player. 1984 was his only pro bowl appearance, he lost his starting job the following year, and intercepted 7 passes in 8 years.