I've played around 60 games so far this FIFA and I had been finding it really hit and miss.
The tackling in the box has been a nightmare, and I have found myself struggling in front of goal. I think I have lost as many as I have won, using formations with wingers. It has been pretty annoying because I have been dominant stats wise then losing to a stupid off goal.
However I have switched to 4-3-1-2 and noticed an immediate improvement. With two strikers up front and a cam the link up going forward is so much better and you can actually pass your way to goal and carve out a chance.
Suarez has gone from 8 in 25 to 8 in the last 3. And I'm no longer relying on my cms to chip in.