What is the question? The only difference will be the amount of spacers. The long head tube doesn't mean anything to the way the bike will ride.
Ahhh spacer are not as ridged as headube...
While its not pretty a tall headube beats a spacer stack performance wise ( stiffness, flex etc ) every single time.
Don't guess or ask a bunch of Internet nerds ( eg us
) get a proper fit and get the bike, Stem, headube combo that fits properly, what's $300-400 when your about to drop $3700 on a frameset?