Just having a quick look at numbers for last year on Nikorima and SJ, makes for some interesting reading.
Nikorima - 10 line breaks, 10 line break assists, 9 tries, 9 try assists, 17.6 tackles avg per game, 2.6 missed per game, 100 kicking meters a game.
SJ - 7 line breaks, 11 line break assists, 4 tries, 14 try assists, 17.5 tackles avg per game, 3.6 missed per game, 220 kicking meters a game.
Significantly more try assists and kicking meters, and slightly more missed tackles for SJ, but more tries and line breaks to Kodi, with the rest of the stats prettt even.
I know stats aren't everything, but if we're paying half as much for Kodi, then it's a pretty good deal imo.