Result of normalisation, like the rest of the appraisal process itself, is made to fit the bell curve. Been there done that. And then comes salary increments...the 2nd pain in the a$$.
Sorry guys appraisals are mostly a joke and do not really reflect on 'talent' but just a snapshot of what you have done in that period of time.
Remember we are humans and we cannot expect machine like consistency in performance from a person from month to month year to year..some may do it but it's exceedingly rare. It can vary due to many factors including health, ability to grow, background factors like family etc.
I think the thread is going OT so I'll stop here.