Ok guys I solved the problem but no thanks to EA as I figured it out myself.
Here is what you do:
1. Go to My Team screen and press R2 (Lineup Select)
2. In the Lineup select pop up screen press Create New Lineup (Triangle for PS3 users) and name a new lineup for your team.
3. Delete all older/existing lineups
This should solve the problem of wins and pucks not being awarded properly. What basically happened is that a player injury didn't record properly in the my team screen so there was a system glitch because of that since that injured player shouldn't be playing because of his injury. What I recommend to do in order to prevent this is just monitor your team's boxscore at the end of each game to see if somebody has a drastic decrease in ice time and/or keep an eye out for injuries during the game (the commentators usually comment on injuries, but not always by player name so be ATTENTIVE!)
Any questions, don't hesitate to ask and please let me know if this worked for you. It would be great if this post was marked as solved by the author of this thread!