What's your problem with Mercedes? It's hardly F1 style domination. They've built a nice looking, quick car. Looked over one of the road cars at Silverstone a couple of weeks ago and it was really nice.
The BMWs are unreliable or crashed, Bentley converted a school bus into a race car, Porsche can't make up their minds what they are doing in GT3, Mclaren are apparently too busy to do this race and Ferrari of course are terrified of Nords. Narrows the field down a fair bit.
Still 5 hours to go so anything could happen.