Does it have adjustable forks with anodised blue twiddly things?
Rear shock adjustable?
Dry clutch?

If yes to above then who cares what it is? It's got the bits you need. The Magtek wheels are an added bonus.

The SP forks (blue twiddly things) have a different design to the SE, where the rebound damping also controls the compression damping to a small amount.

This is definitely one area where all you MC28SP owners can say your bike (or at least bits of it) is better than the MC21

For all your info, the SE/SP have the same engine. The SE/SP cylinders are marked with an 'L', the R is marked with an 'H'.