But, with almost all of the cars having very similar power stats, your best times will come from the car that "feels" right, because these cars race right on the edge and are great fun for that very reason. Looking at the Zandvoort lap times shows that there is not a lot of daylight between the cars over a single hot lap, and over a whole race the average times will be much closer.
Yup - feel is the important bit.
I've won the '65s in the Waza at least once - but my attempts in the theoretically better 1512 have all failed as I didn't gel with it's driving style so much.
I've actually done better in seasons while driving slower (than the Ferrari) cars like the BT11 and 7
My rare goes in the BRM have generally been quite successful as it drives a bit like the Waza but with better top end.
I'd probably suck in the Lotus as I've hardly ever driven it...