Re: riker's choices
Yes, Memory Alpha says it, but where did they get that information? I can't find any dialogue in the episodes to support the 22-year-captaincy idea.
I have no idea where it came from. Memory Alpha is what I've always referred to when I need information. I'd suggest contacting one of the webmasters to find the answer to your question.
"He clapped his captain—his friend—on the shoulder. Yes, this man was very much like James Kirk, in all the ways that mattered." --Christopher L. Bennett-- Star Trek: Mere Anarachy, The Darkness Drops Again