To be honest, this may not be the tactic, it's most likely the players on the team or sadly the silly Match Engine quirks it likes to play through the course of a game..
Cause I've seen this happen pretty much happen with any tactic that's out there.. Plus, I assume no one ever watches a full game, most play either Extended/Comprehensive, or even less than that, so it's only showing points when possilby the opponents threaten, and sadly the one time it shows it is the one time they score... lol
If you play against a Big time club, you'll have a better judge of your defense at work, so the match engine will show more of the opposition through the course the game.. If it helps, try this tweak:
Push Higher Up instead of Drop Deeper and finally make one of your Defenders a Stopper instead of Cover. Ever since I've made that change, I don't notice much of what you mention honestly. Also no matter how good tactic is or the defense is, a Ronaldo/Messi type player will still find ways to blow through your defense, and that at least is what I'm coming to grips with.
Bottom Line... The tactic that's on the OP has a great win ratio espeically if you're a bigger club like Real Madrid, Barca, Chelsea, Man City, Bayern, etc.. but it won't be guaranteed at all times win against the Big Clubs in the game especially if you play away from home since it's all about the players you have as well. Now if you're a weaker or newly promoted team expecting to dominate from the get go, I mean the tactic can only do so much, as in the end the day it's all about the players you have on the team too.