Yeah, in Nolan’s first IMAX film, he didn’t quite realize how obvious makeup would look on the giant screen.
But seriously, I think even a non-film buff can tell the difference between IMAX film, which has a resolution estimated at between 16 and 18K, and IMAX GT Laser, which is maybe a little better than 4K.
If you have the opportunity, I recommend IMAX film.
Nolan knows better than any fillmaker living how his images will appear on screen and wouldn’t make a rookie mistake like you suggested. Also, he has shot and edited the film with all the various aspect ratios in mind. I’m tempted to see the standard 70mm version after I see the IMAX one just to compare the experiences.
Of course, if you really want to be sure, go to screenings in IMAX film, standard 70mm, IMAX GT Laser, IMAX digital, Dolby Cinema, 35mm film, and standard digital. You know, science! Then report back to us. 