A:Answer The first question is which year P series? Because the more recent 2018/2019 don't get that bright, unless were talking about the Quantum line which actually get up into the 1300-1400 with even higher range for smaller highlights.
The TCL 6 series isn't as bright, the 2018 615 series is actually a bit brighter than the 2019 625. However the 625 is QLED with better color gammut and better local dimming which offsets that difference and makes for a better picture.
TLDR: The 6 series has good brightness, but it doesn't come to the same levels as the P series if quantum or quantum X. So it depends on your viewing environment, but you really can't go wrong with the TCL 615 or 625 in my opinion. The added kicker for the 625 if you're a gamer, is that TCL announced at CES they would be updating it with VRR technology this year. Which is a nice feature to have for the next gen.
