Burning1
I'm scareoused!
If the MotoGP bike has a lower seat height for example, then that would allow the bike to lean over further because of the lower CG.
Lowering the CoG and widening the wheels will tend to *require* the bike to lean further to obtain the same cornering speed, given a set line. It will also tend to make the bike a little more nimble, and permit more greater acceleration/braking. It will not however tend to affect the maximum effective lean angle attainable on the bike - that's primarily limited by available lateral traction, and cornering clearance.

. Hopefully this new one can spell.