dude get to the 21st century. time moves much faster, players are expected to adjust much quicker, results should appear much sooner. RG3 better perform just as well if not better than cam and even dalton for that matter. dont set the bar so low just because you are afraid to get hurt when you see rg3 do terribly.
teams are structured differently with completely different mentalities than the teams almost TWO DECADES ago. Modern teams (for the most part), now, adjust their schemes to help the rookies succeed as best they can where as when peyton maning first started playing football with the dinosaurs, teams were expecting and waiting for rookies to adjust to their system. two different mentalities. life moves faster now, so expectations, which were just as high back then as it is now, are given a shorter time to be met. we are set to have RG3 do better than last season, if he doesnt then we will all start having excuses... ahem
it's ok to dream and even if you are too afraid to do so, dont try to temper it for everyone.