At 100 yards an average red dot will cover 5 inches of area on the target. The crosshairs on a scope will cover maybe 1/2". Obviously then the scope has far greater potential for accuracy. The red dot will be quicker to target for most shooters.
I have tried red dots on slug guns and 1 muzzleloader and have been displeased with the results, however, my turkey guns wear them.
I was ready to go red dot this year on a muzzelloader, but decided against it for one reason. Batteries. With my luck they have a tendency to run out when you need them. Scopes are not battery powered or electronic and you eliminate one more thing that can and will fail at one point or another.
Just my two cents.
Veni, Vidi, Sagittam Mittere, now I'm ready for my nap