Connection has about as much to do with pking as a car has to do with traveling. You can still do it, but just not nearly as well. There was a reason that I didn't pk that much, its because I often played from the library. They had the worst connection around here and I couldn't catch a guard, but that all changed when I got home. It was all about player-IDs, I don't believe any connection would make you have over 120 ping (or even 60, which was enough to 1sq) on a server that is located in the country you live in.