Your battle losses don't keep you in any position to attack another player and call them an EB (player) when you yourself are one. If you use it as a term to belittle someone then ultimately you are belittling yourself.
And even if you are in OSW, those losses still look very out of place. Nothing against zaft or Apoc but surely this lads losses should be higher if he's in OSW. You zaft members need to hit him Harder or this disgruntled one just doesn't fight hard