I think it's difficult to make a direct comparison because of the way the capacity of the engines is calculated. I know it's "fair" from one point of view, but

I think it's difficult to make a direct comparison because of the way the capacity of the engines is calculated. I know it's "fair" from one point of view, but it's not from another (depending on which team you support). The only straight-ish comparison I can think of is the Suzuki RE5 vs the GT500, which are same-era motorbikes from the same manufacturer, with roughly the same capacity. The RE5 wins on horsepower (62 vs 44), but weighs about 50kg more.