Molitva was as a song very anthemic, that always appeals to the voters. And it had good staging, with great backing singers, which worked well with the stage act. They actually made Marija stand out even more.
I'm not saying that every songs needs to use the exact formula, but I can see the minor flaws hurting Nina and her final result, if they don't take them into consideration.
+1
Šerifović had a lot more than just a great vocal performance - what she really had, her singing was flawless.
I just think that Nina should in this case listen more to the advices of her label and not HRT.