[CBR250R]

I believe the UK version of the Ninjette is fuel injected and spotty fuel mapping down low could be the cause of the slower 0-60 times.

Quite possible. Does the European (fuel-injected) Ninja 250R use different gearing as well? Did they discuss fuel economy at all?

The performance figures aren't typically. Most reviews indicate that the Ninja 250R is quicker from 0-60 mph than the CBR250R by about 1 second. But these previous reviews came from U.S. magazine tests using the carbed version of the Ninja 250R. Still, it is a surprise to see a test where the CBR250R is actually quicker than the Ninja 250R by more than a second from 0-60 mph!

Mike