I didn't see anything worthwhile in this comic.
Oh, sure, it has a couple moments with the Brainiac droid that adequately sell the menace, and even some moments of humor that actually ellicited a grin (never more than that, and even then most of the humor fell flat, either because what works on the screen does not always work on print or because it was unfunny to begin with), but the only moment here that made me think something beyond "this is bland" or "this is nice I guess" was the shirt rip and cut to Superman flying... which is just repeating imagery from the movie, anyway, and we already saw that page in the promotional material for this comic. The artstyle does make it feel properly 70's, but it's in the most inoffensive way possible. Brainiac's warped self-image as a savior of endangered species (both when they're about to be destroyed and when there's an invasive species around) clashes with the actions of his droid in a way that rather than inspire curiosity for the incoherence of his actions, just makes him look like a poorly thought-out villain. This is just... completely unremarkable material that's copying far superior previous Brainiac stories and whose only point of interest is that it's based on the '78 movie... but if you want that, just go for Johns' pre-Flashpoint run, Gary Frank literally draws Supes as Christopher Reeve and Donner helped plot some of the stories.