BGA post-game stats are a little hampered by the framework they're forced to work under. It'll tell you, for example, how much wood you got from cards during the game, but not which cards. However, the game logs contain all the information you could ever want, and they're readily available for a script to interrogate. This page provides such a script which you can run as a bookmark on your browser to generate a set of logs. You can then paste those logs into the box below to get some improved statistics for your game.
Is this trustworthy?
It's not usually a good idea to run scripts on your browser which you found on the internet! Please follow these instructions at your own risk, hopefully after someone you trust who knows about javascript has verified that it's safe.
You can see a more readable version of the script here.
This page works entirely on the client. No data is sent back to the server.
Instructions
Simply click the Process button to see an example output. To get data for your own games, do the following:
Create a new bookmark (usually Ctrl+Shift+O). Name it whatever you like and add the text in the Script box below as the URL. You only have to do this step the first time.
Go to the game you're interested in on BGA.
View the replay for any player.
Click on your new bookmark. Hopefully it will tell you the log has been copied to the clipboard. You might need to give it permission to access the clipboard.
Paste the contents of the clipboard into the box below (overwriting the example log) and click the Process button to see the results.