Part of regular war clan that has th7-th9 and uses lots of dragons.
Spamming dragons in summer of 2015 as follows
TH7 -> 10 x lvl1 drags + 3x lightning = 3 stars no matter what the layout, many of the attacks use less than 10 dragons to save elixir.
TH8 -> low level Air Defenses, non anti dragon layout: 10 x lvl 2 drags will get 3 stars.
TH8 -> air defenses less than lvl 6, but anti dragon layout or lvl 6 AD poor layout, need 10 x lvl 3 drags + strong castle for 3*
TH8 -> air defenses lvl 6, anti drag layout, lvl 3 drags + castle are only getting 2* following summer 2015 update, the extra HP on buildings has tipped the balance.
A TH9 can bring 11 drags and an extra spell, and this is enough to three star virtually any TH8 even with lvl 3 drags, so lvl 4 dragons will be easy. A TH9 can also squash any TH8 with lavahounds and balloons, they just don't have enough air defences.
TH9: So far have seen a few lvl 4 dragon attacks on TH9 and they failed to three star, attacks on max level TH9 with lvl 7 air defences failed to get to the TH so only 1 or zero stars.
Personally I think spam dragons is too easy at TH7, this is meant to be a game of skill.






