I'd have thought that Tull and Floyd were equally accomplished in the art rock genre of "dirges." At least that's the impression I got from constantly hearing tracks of Aqualung, when I listened to FM radio.
Just heard a funny story about Ian stopping play in the middle of a song to yell at a woman who had gotten up to go pee. Apparently, only allowed between songs . . . . Whatever you say about the music, one thing I liked about Dead shows was being allowed to answer the call as needed ;)
To each their own, of course!
John