Have a look at Fiorentina's default formation, it's similar to the formation you have.
ok i just cheked it basically 4 straight across the middle and one def midfieler. Maybe it makes for a better game the one you mentioned but i have found since pes3 the formation i use. with 1df mid and 2 att mid is just a beast formation, and easy to win with. ANd so far in pes 2013 i have been dominating offline ML since i switched back to it.
Thats the thing I love about PES though tactics make a visible differnce,
Whereas FIFA it dont matter if you play 3-4-3, 5-3-2 4-4-2 etc etc game still plays the same lol