I play on wireless, and as you can see from my ping, I'm usually between 100-140. Maybe that's because I'm a million miles away from you guys on the other coast AND on and island.
I would hardwire it up if I had the chance, but honestly, when I play on some of the servers that are closer to home (Seattle< Vancouver, Edmonton), my ping is between 20-40, and I'm pwning like nobody's business.
I think that wireless only becomes an issue if you have a) phones nearby, b) the microwaves on (yes, its true, when the microwave goes on for more than 3 min I lag out or time out), c) your playing from really far away from the server. But hey, I love the PuNx server and I'm going to keep playing no matter what my ping (until one of you guys kicks me
).