Thanks Negrita for your response. It looks like the Penetration Testing / Vulnerability Assessment circles haven't really come together in agreement between certain certification tracks.
The first 2 certifications seem to be proprietary tracks with specialized curriculum for the penetration tester. The CPTE is the advanced penetration course offered by Mile2 training, while the CEPT is also an advanced penetration course ("replacing" the ECSA) offered by Infosec Institute.
Most companies haven't recognized these certifications yet as pertaining to penetration testing which has me wondering if they'll be "embraced" at some point.
MS, CCSP, CCNP, CCDP, CEH, CHFI, CPTS