I love the new system. I was fighting france as spain and I think I've had 50k men wiped out and literaly no troops left in the mainland twice now. It's not just lower ping pong but the AI does seem smarter, it does follow up and follow armies around until they're fully dead. Although if they had handled the follow up sieges and taking down of my armies better france would have totally won. Instead they had a 30k army taking losses (it was late 15th century) to artrition somewhere and 2k armies everywhere else I just took out whilest taking back my cities.