Dan
Contributor
DevonDiver has already pointed out, multiple times, that you can't compare the results of a dive using VPM or Buhlmann in Subsurface to that of a dive computer using a adaptive algorithm like RGBM. VPM/Buhlmann completely ignores many of the data artefacts that RGBM uses to significantly affect its result.
Compound these over multiple days, with multiple dives/day, and you get this result.
Both SUUNTO & Cressi use RGBM according to @DevonDiver. But that's not what I was wanting to show. I want to compare my ascent rate compared to OP's. You can see that his ascent ft/min slope is less steep than mine. What I learnt here is that you will get penalized if you ascent too slow.