does upload speed matters for a (no-lagg) game experience?

[sfsmexusa]

whats your upload speed? mine is 384k

[Shin00bi]

Having a good upload speed is a sign of a good connection, but what matters are the ping times.

Lower the ping, the better. You should be less than 80 for CvS2, but I'm guessing your avg ping with other players is 100+.