Could someone please tell me WTF is going on?

In comparison to the other BGs, I find Wintergrasp baffling. There's so much going on, with so many people, that I get completely confused. To be honest, I'm the same with AV. We won, but I don't think I had much to do with it. Along the way, I got

• Destruction Derby
• Leaning Tower
• Wintergrasp Victory