Originally Posted by
Geekybiker
But all things equal more gear inches=faster bike to a point.
But fewer gear inches mean you can pedal faster = faster bike to a point.
The truth is that the fastest bike has the gear which strikes a balance between how fast the rider can pedal and how hard the rider can pedal. So you can't say that either higher gears are faster or lower gears are faster because it depends if "higher" is closer to the perfect gear or further away from it.
So to answer the OPs question, the TT is faster because it has a
wider range of gears (which makes it more likely to find the
right gear) but not necessarily because it has
higher gears.