Attack wins matches,defense wins championships!

[Tactician]

So a simple conclusion that defense must be capable of snatching ball if opponent come to your half or it will be futile to use counter attacks.

If you want to use force counter-attacks, you must make sure that you will have enough cover (number, quality, or both) at the back after you allowed the opposing players to come into your half freely. Forcing counter-attacks, especially when 4-5-1(V) is used, generally works as very few managers know how to deal with this. But, if I put you in a league of good, experienced tactical managers, you might end up at the bottom of the table despite using the so called great 4-5-1(V) as your main formation.