I expect Vilven and Kelly will get top 777 FO pay, no matter which aircraft they are trained on, and whether or not they even turn a wheel.
Top 777 FO pay is currently $163.10/hr day and $176.64/hr night.
Well that is certainly what they are entitled to, if not more ... where would they sit if they got their original seniority back? Do they still receive their pension? What is an EMJ F/O pay? They must never be paid less than those flying the same position, the fact that they might be receiving a pension also ... should never enter into the calculations for their flying pay ... it is a separate issue.