This guy named Player i think is UC'ing or Slow god moding.
I am pretty sure i hit him 5 times, AS A ZERKER with donor revs, yet he doesnt die. His ping isnt that high only 80-90 and yea. Look at this replay. You may have to speed forward until im zerker. casue i was recording just incase there is a hacker.

http://www.mediafire.com/?p12hs2w6pe1g9o2