Yeah ponga / Drown play different positions and have different skill sets.
However as 19 year old’s Ponga wasn’t an NRL regular and had 3 tries / nil TA in 9 games, Drown has 12 games for 2 tries / 3 TA.
Also Drown’s running game is fairly underestimated, for example he is averaging 9 runs for 74 while the likely Aussie halfback Evans has 10 runs for 66m (Cleary has 14 runs for 87m)
I think we really underestimate how good Drown has been this year as an 19 year old rookie, especially after missing 3 months or so with a fairly serious injury (and unable to train)