Year 1: Bron the best player but Wade wasnt too far behind him. Wade was the better player vs Dallas that year, so you lose here.
Year 2: Bron CLEARLY takes over as best player on the team but Wade was still good (averaged 21 or 22 in the Finals) and of course you had Bosh and the great role players with Battier, Miller, Haslem, Chalmers, etc, etc.
Year 3: Not a great year by Wade but he played well in the Finals with basically winning them the title by his heroic performance in Game 4 getting the series back to South Beach.
Year 4: you have a point.
So 1/4 of the years you have a point.