Rfj, if you're going to make claims, please use solid evidence. I've seen you post in several other threads with 'I'm bigger than <pornstar>, look at these comparative pictures that prove it.' You may be, I can't say for sure. You certainly look comparable in several of them. But in the end, it really doesn't matter.
Photoshop only works to doctor pictures, and only so much can be done with lenses, as they generally affect the entire picture. Yes, camera angles effect how things can appear. But your arguments generally have several problems.
For this post, i'll stick with your 'photographic evidence.'
You have posted four pictures purported to show johnny with 'no tricky angles.' And yet all four have misleading elements. In photo 3, he is mid-motion, leading to a foreshortening effect. While his body may be (roughly)lined up with the camera, his penis is not parallel. In the other three photos, his entire body is clearly pointing at a diagonal angle, relative to the lens of the camera. As such, none of your posted photos actually show what you claim: a side view shot free of 'tricky camera angles.'
As for the reference of base-to-belly button distance as a measuring point... This fails for the same reason that hand lengths fail (as you regularly point out). People are different. Yes this distance is more 'standard' than hand size, but it is still quite unreliable.
I believe it has been said many times, the most 'accurate' measurement is taken along the top, but as you rightly pointed out - this angle is very succeptible to perspective-related distortion. For the purposes of comparison, a camera shot from the side is most reasonable.
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Roughly 4:20 into the video is a dead on shot. I'm too lazy to cap it and post.
And given that shot (and many others), he is at the very least an inch longer than me, and I measure a dead 7 along the top.
Finally: If camera trickery making pornstar cocks look bigger than yours bothers you... take your pictures from the same angle. Then there's no room left to complain.