Auto Racing: power weight ratio, power to weight ratio, kmph

Question
Hi,
some motorcycles have higher power to weight ratio than others despite having less net power. For example bike 1 weighing 147 kg and producing 14.5 PS of power has a power-weight ratio of 98 PS per ton. Bike 2 weighing 122 kg producing a power of 13.5 PS has a power-weight ratio of 110 PS per tonne. But still the bike 1 manages to beat the bike 2 in 0- 60 kmph and 0-100 kmph timings. Why is it so? Shouldn't the bike 2 be faster than bike 1?

Answer
The answer lies in the physics for the example. Power to weight ratio is one thing, but there are other things to consider:
1) Power band
2) quickness off the line
3) where the center of gravity is
4) how much power can you get to the wheels
5) how much are the wheels spinning before they get traction

These are only a few reasons.