Mark Vincent's 3 syllables (1 + 2) hit the Hollywood sweet spot.
Mark's 1 beat vs. Vincent's 2 create a natural cinematic snap.
Mark Vincent's softer consonants cost it screen presence.
Mark Vincent misses the alliteration hook that makes names stick.
Mark (4 letters) and Vincent (7) have a slight length mismatch, but it reads fine on screen.
Mark Vincent has mostly familiar phonemes with a few tricky patterns.
Mark Vincent has decent vowel richness, but stronger A and O sounds would lift it.