DRK sustain wasn’t considered poorly balanced in ShB though, everyone agreed that TBN was strong but that DRK had relatively weak sustain outside of that. If anything people point to ShB DRK as an example of what modern tank sustain should look like
So if we take ShB DRK as the peak, or somewhere around it you could maybe argue PLD is slightly weak but it more shows that WAR even then was too strong
DRK is only considered bad now because every tank has gotten TBN but better with less cost and they also have more alternate sustain as well