In my experience, the difference between lagswitching and towerlag/router lag is based upon how long they've been on the server, what gang they're with, and who they're friends with.
Had a mandem kid dead ass teleport through a bomb explosion straight behind me and staff blamed 'eu ping..' Doesn't seem like they take into account how that lag always seems to happen right at the perfect moment and end when it's over. Coincidences happen every day, but if someone dismisses repeated coincidences, they are biased or naive.