So are the T50 decks that you encounter in PvP from the daily, weekly, or all-time T50?
If they are not really the 50 best decks, but just the decks belonging to the players who have accumulated the most total wins - regardless of how recent the wins were, or who they were against, then it's not much of a list.
How does a deck fall out of the T50? Only by someone else surpassing their score? So a deck with 1,000,000 pts. could replace all their cards with quantum towers, lose every match by 100+ HPs, but because the score is so high, it will sit as a worthless T50 deck for months like that.
Doesn't seem right. Am I just not getting it?