Even with the details visible on the sides you're still missing more on the top and bottom because the show was originally intended to be seen in 4x3 AR.xmysticgohanx wrote:^ you forgot that the 16x9 crops have more side information than the Dragon Box so the crop would have more vertical info.
Heck, even Dragon Ball Z doesn't fit to be cropped to Dragon Ball Z but it kinda works every now and then when the cropping is properly done something that FUNimation didn't bother with too much.