The problem with this comparison is that Fernandinho had the great pressing system we had with Silva + KDB ahead of him, and this season, Silva couldn't press anymore.
When Fernandinho played defensive midfield at the end of the season he got bypassed just as easily.
Rodri got dribbled past 1.45 times per match this season.
Fernandinho got dribbled past 1.66 times (only 5 times in the 3 games he played at defensive mid,all against lower table opposition)
Last season Fern only got dribbled past 0.57 times per game, but worth noting, that in 17/18, it was 1.41 - the same as Rodri this season.
As for being dispossesed, your stats are wrong. Rodri got dispossessed 27 times vs. 28 times for Fernandinho last season.
That's despite Rodri having the ball 600 times more over the season.