Exactly. It may seem weird and not how people like it but people are voting on more than one thing. Dare I say the strange stage performance of Sweden helped it win and become such a favourite because without it, it's a club song we have heard a million times before. Im pretty sure Loreen's unusual performance helped her get the win and votes. People like things that stick out. As rubbish as "I'm A Joker" is, it was one of the most entertaining performances of the night. It was my mothers favourite quite bizarrely as well.
I watched the show with 2 non ESC fans and both of them liked Georgia. I was like "WTF???".
The live performance is incredibly important and essential in coming up with a ranking. Otherwise why not do playback or have it on the radio? The live aspect is what makes the show.
And one thing we forget is that juries vote for a Top 10 while televoters only vote for their favorite. We're comaring apples and oranges here.