I don't believe that Seb is the most overrated driver, he's had his fair share of bad luck this season with reliability issues. His driving style does not suit the V6 turbocharged engines,I've seen Seb make many mistakes this season with many understeer and oversteer moments, Daniel has been able to extract more speed out of the 2014 tyres and increase tyre life. Vettel was really fast in the V8 era by mastering the exhaust blown diffuser, he drove faultless races by pulling away in first place at a vast rate of knots while keeping his tyres fresh.
Quite a few drivers have suffered after the changes F1 has had in recent times such as Kimi, the brake by wire system that the 2014 cars feature really lowers the confidence Kimi has during braking. He is also quite sensitive to the front end of his car, he likes to have a sharp and responsive front end which his Lotus had. I really hope he catches up to Alonso and tighten the gap.