Where can I find the A/B Test statistics?

Your A/B test statistics are located under Messages >> My Newsletters.
You will find them under the message marked with the A/B test icon. Click on
it and all messages from one A/B test will be listed. You will find most the successful
messages on top based on the value you selected to define a winner – either
opens or clicks.

All other stats are the same as in regular newsletter messages, like the number
of total newsletters sent and the number of recipients.