FWIW, I thought Gunn's The Suicide Squad was "fine" in all "oh, man, I hope nobody ever says that about something I worked on" context that it conveys. Some things worked and were funny, other things fell flat. It was leaps and bounds better than Ayer's Suicide Squad, so it was seen by me as a win. But if I had to compare that to any of the Guardians of the Galaxy movies, I'd say it was worse by a long shot compared to any of those.