I'm just going against your blanket statement that with a stock cam 4.10s are useless on the street and saying that a good driver can make use of them. It doesn't equate to them being the best drag gear either, not sure where I said that or where that came from?
Who can blatently say what gear is the best or worst without trying everu gear for every combo? Noone that I know of. Educated guesses work, but then again a blanket statement of 3.55s for 5-speeds and 3.73s for AOD cars doesn't even give an educated guess, just a general response that came from WAAAY back in the day (long before I ever had a fox). As a matter of fact the 3.55 and 3.73 thing has since gone way to the idea that 3.73s for a 5-speed and 4.10s for an AOD seem to be more optimal.
As it sits we have 3.55s in an 89 GT, 3.73s in an 89 LX and 4.10s in an 86 GT, ALL with stock cams. I have driven all 3 back to back on the same day, same roads, etc... The 3.55s are very weak, the 3.73s make a nice compromise, and the 4.10s are the scariest, but the most fun when you know what your doing.
To add to this debate my brothers car with the 4.10s used to have 3.55s, car actually has been faster with the 3.55s, but is much more fun to drive with the 4.10s. He doesnt plan to go back either, just build a motor to use the steeper gear...