Yeah, something looks a little weird with the dimensions. Either the cheeks and faceplate are too tall, or the dome is too short making them look bigger. Or both. Almost looks like one of the Target Rubies helmets, but it has accurate ears and a 3d borden connector and everything.. so if it is one, someone went through a lot of effort to upgrade it. I'd say it's perfectly fine though, no one's gonna give you trouble over a slightly off vertical scale. If there even is one, lens distortion can make things look weird.
Paintjob definitely has most all the big landmark damage areas I can recognize, and colors are generally all good (concrete color looks off, but that's about it). The masking could be a little more detailed to be 'perfect', but I assume you didn't pay ~$600 dollars for it, so it's pretty damn good as it is. The ear decals in particular look really great.
Looks like a perfectly serviceable ESB helm.