You stats are out of date and relate to last year.
The screenshot I have posted is the performance this season and Matt and Jay are on a par, but playing slightly different games.
I like Byers but he is better in the no 10 position although not as good as Celina. We have good midfielders but a number of them are very similar.
For me the simple facts are we have had the best start and run of performances (especially considering a brand new manager) with excellent results and SC has trusted Jay and Matt to be the go to midfielders for the defensive screen. Their stats are excellent and support each other.
The one role we have missed, including last year is the Makele type box to box midfielder and Jay is doing a pretty good job in that role and is, in my opinion, one of reasons our results have improved.
Matt is a regista and becoming a pretty damn good one.
George is more of a no 10.