Absolute rubbish. They might look like bikes, but that's about it.
Then this turned up. For the record, this is not how a bike actually handles in real life. Nor is it a simplified version of how a bike handles. It's how someone who has only ever been in a car or a cybersled in in the year 3030 might think a bike might handle, if they'd never seen a video of one.
Add to that an annoying motion blur which essentially makes you blind over a certain speed, and it's plain to see noone involved had ever even sat on a bike...
Luckily MotoGP 1 and 2, or MotoGP06 on the 360 are much better.... Thank God. If you're going to make a game involving bikes, at least get the basics right.