I agree, and there is also that Nicky luck factor, when .... can go wrong fir him it will, save his title of course, though it wasn't without its challenges. That Evo was not supposed to be a contender, but rather a holding pattern for the following year's formula.
Confidence is huge, and I've said as much for riders that got favored by their environment.
I don't agree however that Biaggi was at his peak, if that's what u meant. Biaggi had his best years in GP, and when he won his Sbk title I think he was past his prime. I think it's safe to say Biaggi benefited from Spies move to GP, otherwise I doubt Biaggi's name would have appeared on the trophy 2010. Checa, I don't know how he did it, as I never rated him as a top 3 rider in GP, but then again it's difficult to judge given the all important parity in grand prix. Though I will offer a bit of my theory. Certainly the Honda & Aprilia both rode respectively was not a sloth machine. Especially Biaggi's. I saw Checa win twice at Miller Sports Park in Utah. Its a great spectators venue. I won't say I could perform a diagnosis of his machine from the view along the fence (Babelfish) but that Honda was lacking nothing as far as I could detect. I will also add, and people can correct me if I'm wrong, but the other manufacturers were still not on the upswing of their development cycle. The Kawasaki was still using Mitsubishi electronics, making short work of tires, BMW was at an early stage, then when they didnt win packed up and left their bikes in the hands of pseudo privateer teams. Ducati was still in the wilderness after their last hurrah for Nitro Nori that never quite worked out, and then circled all the wagons for the GP effort when some Italiano guey was signed.