Yeah the game doesnt use that much, 1 guy I know played via his phone for a month and didnt touch his 1g limit, and the game played fine on 1mb speed.
The problem is ping, which is the time it takes you hits to go from your router to the hosts system, anything under 100 gives you a fighting chance in a 1v1, mines around 50 in the daytime, after 7pm when the US guys pull host I go to 300/400, equalling anger rising