I'm not sure if there will be different ranks of each armor socket (such as having a better sprint than your enemy) but there will be hundreds of different sockets that we'll be able to choose from.
Even if all the sockets are the same (only one grade of sprint) that doesn't mean everyone will be using sprint.
We've only seen a small amount of the sockets that will be available to us and since we can only carry 5 (i think) at level 50, there will definitely be those who choose not to use sprint but to carry some other socket that suits their playstyle better.
Huxley Evolved - A Huxley Game (MMOFPS) Fansite
at the bottom of that page you'll see a list of the sockets we know of at the moment. As you can see it's nowhere near a hundred so there are definitely more to come.