Which of these 15th round come-from-behind performance was more impressive: Weaver-Tate or Paez-Grove?

Which of these 15th round come-from-behind last ditch efforts was more impressive: Mike Weaver-John Tate or Jorge Paez-Calvin Grove? Both came towards the ending of 15-round Championship fights and both were astonishing performances by both Weaver and Paez. Neither did much for fourteen rounds but exploded in the final round to win against opponents who were outboxing them for the duration of the fight. Which one was better? Or was it about the same?