What she said:
“I‘ve been fighting with the pressure to make Maeda Atsuko very proud of us that are left. This award will lead to our confidence.”
From the strong feelings she displayed when it was announced that AKB48 won the award, we can tell that she's feeling very much responsible for the group now and is putting pressure on herself to be the next ace. We feel your ambition, love and passion. With these feelings, she is definitely worthy of being the next ace. Go Mayuyu! Go AKB48! 
Mayu have grown so much.. We can see it from the way she spoke, from her feeling, from her expression.. She really become mature now..
Yes, it's true that she must be feel so much pressure.. With this award, i hope will make her feel better, stronger.. I hope she can make it, not as Acchan's replacer but as the new ace of AKB48.. Just always support her.. Let the time answer it.. Go Mayu!

__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
here the gifs from Japan Record Award yesterday
http://postimage.org/image/79ige4mal/http://postimage.org/image/ltzj8yh99/http://postimage.org/image/p240m03j1/http://postimage.org/image/yp7ivpwil/