Jones doesn't have the style to give Reyes many problems tbh. Despite how his career has panned out since, If they rematched Reyes would still give Jon hell today, just based on their styles and body types.
Reyes struggles with power punchers. Jones can't bust a grape and Reyes has shown he has some elite wrestling defense across his career.
Jones has also historically struggled with athletes that can match his height and reach and are as comfortable fighting from the outside as he is. Jon excels when shorter guys need to close the distance on him because he's a master at staying outside of their range and not allowing them to get in close. Reyes didn't need to get in close and could do more damage to Jones from afar.
Adding on to that, Reyes was at his career high without any losses and was feeling indestructible.
Reyes struggles with power punchers. Jones can't bust a grape and Reyes has shown he has some elite wrestling defense across his career.
Jones has also historically struggled with athletes that can match his height and reach and are as comfortable fighting from the outside as he is. Jon excels when shorter guys need to close the distance on him because he's a master at staying outside of their range and not allowing them to get in close. Reyes didn't need to get in close and could do more damage to Jones from afar.
Adding on to that, Reyes was at his career high without any losses and was feeling indestructible.