It's because Seungri had win in other music show.. Please read my comment. YG think they should win at least once no matter what. If they had won before, then, they didn't need to win on inkigayo since on the next week, GD's also made a comeback.. -.-
So do you think who's cheating here?
Inkigayo? But for what? This is for YG's reputation, inkigayo doesnt got anything for this... -.-( or maybe they got some money from YG.. Who knows... )
I don't have a strong evidence but this is just my opinion...