TH9 is a joke compared to TH10 defense
I'm in a small 10man war clan with 57 wins so far and sometimes we get really bad matchups against some premmie TH10s with infernos. We have 4 TH10s and, 5 TH9s and a TH7 and our opponents just had 7 TH10s, 2 TH9s and 1 TH8...
It's just funny because it's IMPOSSIBLE to win those kind of wars. I'm a TH9 with traps and 5 defenses left (2 ats and 3 cannons) with 60 legos, rest skulls...
I attackes an opponent TH9 guy with decent defenses (all maxed except for lv10 ats and cannons) and around 50% skulls, got two stars for my clan.
Well here comes the funny part, I had to use my 2nd attack against their weakest TH10 (lv1 infernos, xbows, lv6 walls and lv5 mortars and wiz towers) and those flametowers burned my whole gowipe, I've used 3 rage spells and one jump spell, I was near his TH but didn't get it... I'm not ♥♥♥♥♥♥ or so. Just sayin that even the biggest premmies defends well against a maxed TH9 troop attack, as long as those towers stand. And yea I know there are lots of youtube stuff with people getting easy 2 stars against strong TH10s, I'm not unexperienced and I know how to place my troops (200+ war stars) but it's really hard getting those towers down without freeze spells..
In my opinion the jump from TH9 to TH10 is a BIG BIG difference compared to other TH levels defense-wise.