Final Match in doubt of formation

[SheaVa]

I would use 3N-2N-2N-2W-1 butterfly, attacking, down the flanks, normal passing, zonal, normal tackling, own half, no counter, no offside.

It counters everything he has and exploits his weakness on the flanks.

Ok. I understand all of that. But Why not force the counter attack? And why not offside trap?