You're clueless.
The original Diablo had some of the most horrible hacking, hacked items, and duping. Duping is when you trick the game and turn a potion into a copy of an incredibly powerful item you have. It's very easy to do, and it's a wonder how Blizzard didn't fix it all those years back.
Your character can be using hacked items and you couldn't even know it, you'll have to let me check him out, since I played the game for years before I got tired.
But looking at your equipment, probably not :P
I can come join you, just PM me with a time (I'm US Eastern, go find a international clock and put your time in there) then tell me the name of the game, and I can come help kill Diablo. (I might have to make a new character, dunno if my account was deleted
)