OvO is not calculated accurately when Hunting Enemies is active at the same time.  Therefore, statistics about wins/losses are not accurate.

Why?

When both are active, players are getting attacked and losing rss, troops, and possible rewards by those who are not in the opposing order.

Suggestion:

Do not make a Hunting Enemies event during the whole OvO event.

If it is only mixed for a day then the smart players will plan for it and do the damage with less risk by waiting it out.  But a true OvO will not allow any one outside the OvO gain points on you or cause loss if it is not the opposing order.