Yes and no. I had my E6 calibrated for multiple modes, but I used ISF Day a lot because at one point it was in living room where it is fairly bright. It is now in the bedroom and it is extremely bright as I only re calibrated ISF Night and left Day as is. So when viewing Day mode it is brighter than my A9 which I calibrated for a dimmer room in the office. However the E6 has a stronger ABL and ASBL. It is very pronounced, where the A9 is more subtle and not as strong.Thanks. It is interesting to read elsewhere that people actually find their 6-series LG OLEDs brighter than the A9. Would you agree with that?
As for real brightness when measured the E6 is brighter on smaller windows. Pretty much all LG OLED's are brighter on smaller windows than the A9, but they cannot sustain it as ABL kicks in very fast. Larger patterns or full screens the A9 is brighter and maintains the brightness where the 6 series cannot