Views on youtube don't matter anything in the contest. An example: Brividi is a quadruple platinum song, it has 55 million views (official video only) but it is not the most popular song in the competition and won't necessarily win the all thing and in fact I didn't think it will win. Having a million views or 300.000 doesn't mean anything for the competition itself even, because you don't know which are the countries which listened to these songs the most. If Maro has 300000 views bit all of those views come from Nations who are participating in the Contest, that is a good thing for them regarding the competition, because it means they probably will end up having more votes.
Another example: UNO by Little Big has 239 million viewers on the official Eurovision channel yet there is no way they would have won, because those views are mainly from Russians, let's say the 80% of them. They are big in Russia, that's why... How do I know? From the names of people leaving comments on it, or the fact they use cyrillic characters (in some cases).