I found 'Gravity' much more watchable as a movie than I did with my first viewing of 'Interstellar', possibly because 'Gravity' has a more linear and predictable storyline, though its ending could have been a little better than an abrupt 'cut' as she staggers off.
I found Gravity more watchable as it finished after 90 mins instead of 180 mins
I'm not a huge sci-fi fan but struggled through both Interstellar and Gravity. I can certainly appreciate the cinematography and special effects in both, and also appreciate why people enjoyed them.
It has been quite a while since I saw Interstellar, but I had one question that someone here may be able to answer, if you haven't seen the film please don't click the spoiler.