Oh come on -- that's orthogonal to the point being made. However you define "success," it is true that some subgroup will have a higher potential of being successful than the average, i.e. all babies. Babies have the widest potential, but not the greatest potential.

Are you objecting on the grounds that this speech is offensive to non-graduates or that it's generally not the case given the context?

A test statement may be: A certain population is at the top of the IQ bell curve therefore they are smarter.

The IQ bell curve being the context.