[Help] Change the score calculation plugin

Hi,

I can read a little PHP code and change simple settings with trial and error.
I’ve bin doing this for a half year now and i can’t get passed this one.

There is a plugin i’ve installed and i need to change it a bit. Who can help me with this one?

Change the score calculation (v2.5 and up)
Since version 2.5 changing the way the plugin calculates the score has become very simple. This example also rewards the goal diff points when the match ended in a draw and the user predicted a draw.
https://www.dropbox.com/s/19tgm3frpsd6a2h/football-pool-extension-change-calc-score.php

I need this one not only in Draw also in a predicted exactly right match.

Who can edit it for me show it works also when the user predicted exactly right match?

Many thanks to Antoine for this great plugin and support so far!