Well, this "simple" math is failing to make your point because I consistently see QBs that are 6'4" and taller have no issues climbing the pocket and seeing over the interior OLs or throwing over the interior OL on shorter or quicker passes.
In fact, here's 6'4" Sam Bradford showing no issues with his vision as he throws over the OL:
View: http://www.nfl.com/videos/nfl-game-highlights/0ap2000000261325/Bradford-third-TD-pa
FWIW maybe simple is a subjective term dependent upon individual acumen,and I did understate the number of scientific disciplines utilized bk there is physics as well as in vectors . Further "failing " to make my point to you and actually failing to make the point are two entirely different things.
Now, I have submitted science and tried to take this out of the realm of anecdotal evidence which is only an effort to "prove" a premise and goes round and round.
What IS more if we MUST consider anecdote , the last two SB championships were won by QB's on opposite ends of the spectrum and but for a stellar read by a DB would have been most likely won by the shorter QB, an interception not at all unlike the one thrown by Shaun Hill (6' 4") to lose the SD game for us. Which gives rise to the possible retort that with "each inch" lost there might be a benefit accruing from greater mobility that would offset or outweigh any concerns real or imagined a preoccupation with height seems to hold.
So let me say this ,I regard it unlikely we will come to an agreement on this ,which has never been my objective rather to offer that the issue has alternative interpretations and to give those alternatives for acceptance or rejection by the whole of those who re these posts.
So I'll likely give you the last word ,and thanks for taking me back to HS physics ,that class featured the absolute prettiest girl in the entire school who as was the fashion wore short skirts that originated the term beaver shots,it was the high-lite of my day