Superman review: Can James Gunns reboot get DC back on track?

There's a lot riding on James Gunn's Superman, both as a reboot of DC's movie universe and as the world's reintroduction to the Man of Steel. It's fitting, then, that its closest analog is Star Wars: The Force Awakens, Disney's ambitious 2015 relaunch of a galaxy far, far away. Like The Force Awakens, Superman similarly leaves plot threads dangling in mid-air, but papers over its flaws by moving at a million miles an hour and centering a charismatic cast. 

On one hand, Superman is big summer fun...