The Lean Gains reasoning for 16 hours as opposed to longer had to do with when the fat burn tips to more visceral fat loss. To me I see that as an additional benefit as most people with low insulin sensitivity store more visceral fat... However that was the reasoning why he stopped @ 16. The idea was to keep it more anabolic and for some reason he also didn't feel increases visceral fat burn was that important in the mix.
Martin is supposed to be 5'10 I think I and I know he is around 195-200 @5% most of the time. That is conditioned enough to do well in a lot of physique shows.
Not saying his physique but his conditioning, is right on par and would do him well in physique or classic physique, hell even most bodybuilding shows for that matter. Definitely far better than just gym or beach good.