He's not exactly far being RB in qualifying, and is consistently quicker in each race.
Hamilton has been driving well for some of this year, granted, but I think KERS has flattered their car of late. It would be interesting to see how well they'd do at Monaco or Barcelona with the current cars. But it does seem that, at times, Hamilton uses KERS to get a good grid slot, a good start, and then to defend being overtaken - but not always, as he has driven away from everyone once or twice (once only, fuel corrected, I think).
Regarding JB's radio - is it just poor quality? He does sound odd, even when he was saying how good the car was in Turkey. Either a quality/transmission issue, or because his cheeks are squashed up by his helmet lining more than others!