Actually, what I was commenting on had nothing to do with the speed of Carr's throws and was a defect in all three QB's last year--there were simply too many long passes that were thrown 3+ yards in front of or around a WR already travelling at or near top speed when they have less room/ability to maneuver.
By the way, according to Stats, Inc., Carr actually suffered from dropped passes less than the Texans' other QB's last year:
Numbers provided are for % of incompletions caused by each problem:
David Carr--Poor throw 37.5%, Pass dropped 13.3%, Pass defensed 20.3 %
Tony Banks--Poor throw 36.6%, Pass dropped 17.1%, Pass defensed 17.1%
Dave Ragone--Poor throw 35%, Pass dropped 20%, Pass defensed 15%
The Art of War