Am wondering about the increase in brightness. I bought a Gen0 Space Black watch, and have now bought a Gen2 Space Black watch, and it is definitely brighter. I know one issue with brightness on the Gen0 was that the sapphire crystal used heavily darkened the display compared with the glass crystal. Since there is an ongoing controversy over the thickness or percentage of sapphire used in the camera cover, I was wondering if they did something to the sapphire crystal like make it thinner, make it two-part glass and sapphire, or something else to help the brightness--or, is it JUST a brighter OLED display? Thanks.