Mignolet is better than Reina imho. Still only 25 and will peak during the next few years.
Watching Reinas performances the last few season it was a position were we needed improvement.
Mignolet is arguably better than Reina last season.
However comparing them at the same ages Reina was better.
It's kind of a moot point, as I don't believe Reina would have ever gotten back to that level, but worth saying.