I am attempting to compare Intelliroute Practial Mileage Basis to
Pc-Miler Practical Mileage Basis.  I need to know how overall they
compare to each other on the amount of miles they show from point A to
point B?  Which shows the most miles and by about what %?

PC-Miler shows both practical mileage and shortest mileage. I have
found that the practical is very close to actual truck route mileage.
The shortest route option is not practical and will short the driver
by about 10 percent and provide a route that will consume a greater
delivery time; unfair if running a driver friendly company.
 Intelliroute varies. sometimes close to PC-miler's practical and
somtimes closer to shortist route. it also takes into condideration
things such as tolls (pc-miler does not) and will route drivers to two
lane roads which can affect delivery times.. Overall, it is pretty
hard to beat the PC-miler product in my opinion