I had a few comments in my earlier thread comparing the always-on with the Series 5 vs the Series 6 that the watches were at slightly different angles and that's why the Series 6 looked brighter. I re-did this test using my wife's Series 5 and my Series 6. This time the Series 5 is on the left and Series 6 is on the right. Sorry the size watches aren't the same and neither are the complications but you get the idea.