ESReality features a lengthy article on benchmarking computer mice. First they discuss their method and then they take a look at a bunch of popular mice:
In this environment where performance is king, it's ludicrous to think that mouse performance has never been measured for reviewing the products. Imagine reviewing the latest graphics card in the same way. Without benchmarks, reviewers would have to resort to loading up their favourite game and commenting on how their frag count improved. You would have no way to compare NVIDIA and ATI cards apart from the quality of the packaging. Without benchmarking, graphics card reviews would be almost entirely useless. So why do we put up with mouse reviews that are just as useless?
I have devised the world's first independent benchmarking system where raw mouse performance can be measured and compared. If you're thinking about buying a new mouse check out the ESReality MouseScore first, or you might be sorry!