Will vs Should

A: "What should happen after you click the link is that you will see a confirmation page."

A: "What will happen after you click the link is that you will see a confirmation page."

What's the difference between these two? I know that "should" implies expectedness, but I was told that expectedness implies fairly confident, while "will" implies confidence. Isn't "should" wrong? Shouldn't it be "will" as "should" does not imply the full confidence?