exactly right, theres point in comparing separate photos, far too many variables esp. those using auto/semi auto mode on their cameras/phones. ive had an idea on my to do list for ages to do a porper comparison of backlights and lumes. choose 2 models to set a baseline of best and worse and take a photo first exposing for the brightest then exposing for the darkest then posting the camera settings so others can replicate the comparison on different models |>Hopefully someone with both models will chime in, because it is hard to tell from separate pics rather than a side by side comparison.
For example here is my 1A3 freshly charged with my Surefire(same pic you used for your first one I believe)
Here is the same watch 5 min later, which looks a lot like your second pic.
Also lume pictures are often hard to judge by. In the two pictures above I had the camera in "dummy" mode, so the camera itself might have compensated for the lack of light a little bit and skewed the results. Plus, people often tweak lume shots in Photoshop to make them look better. For example, in the last pic you show the band looks orange....(Mannnn...now I want an orange Mudmaster :-d )