I really don't think we win 80% of the time in that game.
We had chances, but so did they. Vardy's finish was excellent, but he was also through on goal. Mahrez did very well, but it was a very dangerous counter attack where he got isolated vs one of our centre backs. They also had a chance cleared off the line.
We did well in the second half, at least well enough to earn a draw. But they could also have counter attacked us into a worse defeat.
My point is more that we can't keep starting games like this. We can't have many more first half performances like this and expect to reach our targets. We quite simply have to improve. Even if we did well in the second half. That's not good enough.