The problem with FIFA is that it doesn't get the fundamentals of defense right. It needs some help. We've done the grunt work with adjusting the proper slider values, so the 55 threshold as a minimum just allows the fundamentals of defensive pride to work through.
I mean I don't have to go 10 minutes into a match and see that teams pressure in different waves. The key is they pressure in terms of their close down speed, not in their aggression. Close down speed is what FIFA lacks. You take that pressure below 55 and it's nothing but space.
Look at this Leicester-Bournemouth match:
http://livefootballvideo.com/fullmat...leicester-city
Leicester close down, while containing. That's a big difference compared to FIFA's interpretation where it pre-sets players who continue to have the only priority of chasing runners off the ball.
And FIFA's players that run off the ball are 1000% less realistic than how many runs off the ball there are in real football matches, let's get that straight right now. This fact alone is enough to find a very hard comparison on making defensive tactics so in-tune with the real life counterpart.
If FIFA accomplished the fundamentals of defending, and proper close down speed, I'd be sold on making defensive CTT's, especially pressure, exactly like their real life counterpart.
The pitch is a lot tighter, so some instances to breakaway are a bit tougher. Players feeling like mud sounds like you may have room to increase Sprint Speed for just the user. Just ensure you can't burst past the entire CPU defense, which you shouldn't if they're on 50/50 Sprint/Acc, but just in case - be on the look out.