We've had terrible matches since the last update and having read this thread and used the experience I have seen in the two clans I am in, I have come to a rough and ready conclusion.
the last update seems to have nerfed the .5 advantage completely. A .5 account is much more likely to be matched against a maxed account at the same lvl, giving no offensive advantage and a defensive disadvantage. I guess it could be argued that's fair.
the main issue seems to be that th11's are completely random both in terms of numbers and offensive/defensive strength. It used to be fairly closely matched (unless facing a totally engineered clan)and could go either way in your favour or not. But since the update, it appears to me that the balance of th11 on each side is overwhelmingly with one side or the other. And, it seems that the match is consistently against some clans, not just now and then. Engineers meanwhile, continue to get matched against clans that are predominantly maxing at each th level.
if I were supercell, I'd be trying to find out a way to even up the number of th11 in matches.
i know they always say they want matches to be found in a reasonable time frame, but we recently had a 1 1/2 hour search and at the end of it we got a match that was stupidly one sided. So we lost another 48 hours. Better to search for 5 hours and get an even match.

