I don't think winning more in red line correlates with a higher winrate generally.
I've seen different regs playing the same pool of players with approx the same EV ROI, but one is winning winning a good amount red line and the other was losing red line. One player bets a bit more thin for value, calls a bit lighter, bets a little more for protection, the other does the opposite....the ev of the 2 options can be very close, but the red line outcome can be quite different.
I've noticed in myself and many others a strong bias toward believing > non-sd winnings = > ev, but I just haven't seen this to be true in reality. You could open shove every hand and you would crush red line, but be a significant loser
I feel a common leak of yours in the hands you were posting several months ago was betting too often for protection (especially on turn). If you are betting less often primarily for protection now, I would expect your red line to decrease some (all else equal).
It does seem to me that in reg battles the winner is very often the one who wins red line, but I don't feel this usually carries over to exploitative play against very weak player pools.