Not that easy especially with queen on defense. You need a good way to deal with her. Also not to mention 2 well placed double giant bombs will destroy your hogs. It's easy to 2 star though.
I agree with you, though if OP's title is correct, the base has "average TH8 defense plus xbows", so if it had 2 DGB spots and a queen the rest of the defense would have to be pretty poor to make it an average TH8 defense.