Good spot, I was a bit unsure about them to be honest.I went and looked at it and it seems like that average is calculated from games where a bowler has dismissed Smith... except it counts all of the runs he made in that game and not just the ones against said specific bowler.
So if for example he has a measly average of just 24.25 in games where Wood has dismissed him... extrapolate that to all games involving Wood and Smith... that jumps to 45.52.
I'm honestly not sure why that average is even mentioned now.
This is better. Not sure if it includes this match.