GP's W is just one of those 'get out of jail-free cards'. There isnt really a matchup where you're depend on it to survive, it's simply an added safety net that makes him nearly unbeatable in certain matchups. I'm a Yasuo player and GP annoys me to no end. I'm not sure it works for every knock-up, but gp ult cleanses Yasuo's knock-up AND ult.. QSS can't do that and cleanse can't either. Compare that Fiora's w, which is a great ability IMO. Yes it's incredibly powerful, but you need to be somewhat proactive and creative to use it. If she uses it too early or too late that alone can lose her matchups. It's an ability that adds depth and meaningful choices to the game. It makes almost every matchup she plays into a skill-matchup. GP on the other hand just presses W whenever, it heals anyway when you're low and that's enough honestly. It bothers me that there is so little interaction this ability provides.