You know it doesn't work like that. Anyway Ruslan has specifically said he won't fight Pac so I guess it's kinda hypothetical anyway.
i know the myth about fighter a beats fighter b. and fighter b beats fighter c. but it doesn't mean fighter a can beat fighter c. to me, in my experience, most of the time, fighter a will beat fighter c unless there's a real style mismatch or fighter c makes a drastic change in his tactics like the ali-foreman fight.
Foreman destroyed Frazier and Norton and decided to fight Ali, wasn't Ali supposed to get literally murdered in that one?. Welcome to boxing where styles make fights.
Rios stopped Alvarado quicker inside 7 so I don't think beating Alvarado necessarily makes you a threat to Pac.