This is kind of a question but also just interesting information for players of several games that aren't in the calculator.
As you probably know, there are some games missing on the list for which the sensitivity can be deduced from known facts.
For example, Left 4 Dead 1 will be the same as L4D2 because all Source engine games use the same sensitivity scale.
Additionally, I tried every Id Tech 3 game I play (OpenArena, Urban Terror and Return To Castle Wolfenstein) with sensitivity values obtained from the Quake 3 calculator and they all worked as expected, according to several ruler measurements. I can't generalise the conclusion to all Id Tech 3 games but I'm convinced enough by the empirical evidence to withdraw my requests for the games I mentioned. I'll just use the Q3 calc!
Are you using deduction in addition to analysis?