In general, the times aren't good for Deception nowadays, I agree.

Top deck info isn't representative, people get a win streak, like, 30 games, 21 win, 70% win rate. It happens especially often when a guy first pushed down to lower ranks on WR and then skyrocketed back to the higher liege. Many decks rely on luck a lot so they sometimes have a long row of wins or losses. Then, the "capable hands" can de-rank again but his lucky deck becomes a monument in top decks table on gudecks.