If I could increase my bench 100lbs in 2months I would be SOOOO happy. I think if you're talking about 2 months, the difference would be small but to actually get your bench from 100-200lbs would take more time. Lets say 5 months? (20lbs/month is quite a bit) I think over that time the guy doing 100lbs over and over would have really stopped gaining anything from the exercise. However, the guy that has increased slowly would have put some mass.

Just my thoughts.

IronWorker