Could you help me to beat player from bigger league on cup final?

[u3poD]

I posted post with picture and comment here after match, but forum give me message that post will be visible after admin aprove it

I use strategy from picture total defending with coutner attack, enemy use 4/1/4/1 and in last 15 minutes switch it to 4/4/2.
On 90 min my team counter attack and score and I won cup with 1 level team against 2 level player