Theres a difference between deep, well written and compelling characters. GoT and BSG gained praise for having well written/​compelling characters, and particularly for making them realistic. A real person or a well written character may have a single overriding obsession that means they are not deep or complex, but are very compelling to watch. Conversely someone can be deep but dull (trivial example: composed of a hundred sub agents obsessed with different accounting standards).
Theres a difference between deep, well written and compelling characters. GoT and BSG gained praise for having well written/​compelling characters, and particularly for making them realistic. A real person or a well written character may have a single overriding obsession that means they are not deep or complex, but are very compelling to watch. Conversely someone can be deep but dull (trivial example: composed of a hundred sub agents obsessed with different accounting standards).