Most effective formation?

[Chelses Fc]

The two with 3DC are good vs teams which attack from the middle
The other two if you have a 7* (or plus) team and play vs a weaker oppo

Sorry I don't get you,the formation above which have three wide centre backs is used against teams which want to attack from d flanks and against weak teams AND the ither two formations which have three narrow centre backs are used against teams which want to attack from d middle or smth pls explain

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[nikolgiorgos]

Sorry I don't get you,the formation above which have three wide centre backs is used against teams which want to attack from d flanks and against weak teams AND the ither two formations which have three narrow centre backs are used against teams which want to attack from d middle or smth pls explain

I mean that if you 're vs a stronger opponent who's playing with 4-5-1V, 1 DC is not enough.
About same q, it's risky.