Insane Possession & Clean Sheet

Hello guys I found this tactic on forum and I couldn't believe how effective this is on possession and defensively. Can you guys please test this? I believe that we can see the best defensive results with this one. I'm using this tactic on my save for late in the game to keep clean sheet or like in Champions League second leg to hold the lead. I saw higher than %90 possession on many games if I use it the whole game. Even for the last 10 15 minutes, my possession generally around %45 or so and in such short time with this tactic it go up %60. Unbelieveble tactic. But seriously if you thinking you can win the league or even win the games with only using this you are extremely wrong. Use a solid tactic and use this later. It's not gonna get you goals... or even a goal! But it gives you the power the kill the game. Please test this I wonder the results. Thank you already and have a nice day to everyone