I've seen the comparisons between Pacific Rim and Godzilla 2014, and some of them make me laugh.
The only thing these films have in common giant monsters and humans.
G14 is an old-school kaiju movie. It's about the giant monsters, with people explaining and framing their story. The climax of the film is Godzilla fighting the MUTOs and killing them. The humans do their best, but they aren't driving the film forward -- nothing they do really affects the monsters at all, except for the fact that setting off a nuke may revitalize Big G at the end.
And all of that is pretty standard for a kaiju movie. In some of them, like the first, humans do manage to kill the big monster themselves, but usually it's only as an adjunct to whatever the monsters themselves are doing. Ford burns the nest, and Godzilla takes out the MUTOs. As a kaiju film, it fits perfectly in the tradition. Massive forces are in motion, and, for the most part, humans are doing good if they can just stay out of the way.
Pacific Rim, on the other hand, is a war movie. An old-school war movie, like the ones from WW2, where the enemy is largely faceless and implacable, and the focus of the film is on Our Heroes, who have to overcome tragedy, adversity, and their own personal conflicts to defeat the enemy and save the day.
Del Toro has said as much, and you can see it in the sets and costumes. You could reasonably take all these characters (or slight modifications thereof) and plant them in any WW2 movie about bombers and fighter escorts, and they'd still work the same.
So don't fault one film for not being like the other. They aren't. They've got kaiju, humans, military themes, and the destruction of San Francisco in common. That's more than a lot of movies, but not enough to use one as a stick to beat the other with.