I use the 4-4-1-1 as the basis for my formation, but I kick the second striker a few shades over to their strong foot, and then rotate the CAM and CDM to be staggered to give it a less symetrical look and open up different passing lanes than what the CPU is playing.
It's a mix between the 4-4-1-1 and the 4-4-2 wide diamond.
However, I only use this with Man United (as they are the team I use the most) and it definitely doesnt work for every club.
You can have 5 attacking at once even six if you use your holding midfielder. Also have your fullbacks coming in and that's 8 players in on the attack. And you still have a CDM and 2 CBs to defend the counter. --- http://www.sincearsenallastwonatrophy.co.uk/
The 4-1-2-1-2 formation and the 4-4-2 diamond formation are exactly the same in FIFA 13.
I play 4-4-2 diamond, but during the pre-match line up, it shows my formation as 4-1-2-1-2.
Because they're exactly the same.
I think you really can get by with 3 along the back line, especially against the computer because the CPU is most dangerous in front of the goal. So it's been my experience that unless you're play with an attacking mentality, the extra midfielders more than make up the difference for the loss of a RB/LB. --- It's gor-GET - because there are no French people in Westeros.