Yeah, forgot about them. But as offset they have lower HP. And also they are gem only)
I'm not sure that is easier to get - 8* Gabriel or 8* Dragon.
Also skill of dragons can be evolved with enough patience. But skill of 8* Gabriel is really out of reach.
This means that in long run dragons will be more powerful.
From my point of view 8* dragons should have more HP, because 1.3k is really low for 8* Balance card. Compare to 8* Necro or Catalina or any God with 2.4-2.5k