Douglas Fairbanks's 4 syllables (2 + 2) hit the Hollywood sweet spot.
Douglas's 2 beats vs. Fairbanks's 2 create a natural cinematic snap.
Douglas Fairbanks's softer consonants cost it screen presence.
Douglas Fairbanks misses the alliteration hook that makes names stick.
Douglas (7 letters) and Fairbanks (9) are balanced in length — clean on any poster or marquee.
Douglas Fairbanks's uncommon phonemes make it harder for audiences to latch on.
Douglas Fairbanks's open vowels roll off the tongue — warm and screen-ready.