What's going on here with SvS?

[Crim]

Jake Walt is one of the main "Crimson Pirateers" we have. I experienced this problem in the past and I had asked him:

"Jake, how come whenever fury gets shot at me it completely misses but I still lose health?"

He told me that it's not glitching or anything by an other players, but it's simply a "lag" bug where on their screen, it hits you, and on yours it clearly passes off.