I think both of these QBs are better than their play this season has shown so far, and I can use the same excuses for both of them that we have all used for Brady related struggles in the past.
For RG3, its the ACL. Remember it took Brady a full year to get fully readjusted after coming back from that injury as well, and with a mobile QB the struggles will only be amplified. I say give him next season to prove himself before labelling him a bust.
For Kaep its losing his best offensive weapon in Crabtree. We saw what impact losing (and eventually regaining) Gronk had on Brady this season. He went from having one of his worst statistical seasons to being back to his legendary self after Gronkowski came back. I expect Kaepernick to regain some of his form following Crabtree's return down the stretch.
Having said that, this was definitely not a game that brings in the ratings, even if it had taken place last year it probably still would have been less than thrilling to watch.