Yea, this is somewhat a rant, as well as a suggestion.

Rant:
How the hell can you ping in a duel, and it'll count as a lose, yet you ping in a clan war, and it's like nothing happened?

I mean, come on. People doing clan wars can easily ping themselves to save themselves from a lose, or just quit the game.... You cannot show proof that they actually pinged on purpose....
So, here's the suggestion:

Count a ping/no response/quit game as a lose for clan wars.