I respectfully disagree due to personal experience. After purchasing Captain Cook I, I queued up 10 Berry Bowls and only got 10 instead of 15 as I had expected. It doesn't sound like it's a random occurrence, so I'm concerned.
As clearly explained by Rutger and Zandev above, the upgrade card allows you to make 50% more at a time, nowhere does the card say that it provides free 'bonus' extras.
if you queue up 10, you make 10. The card increases the maximum number you can queue up at a time not freebies.