Apples to oranges.
If Kadri ever becomes a day-to-day NHLer (which I am not sure he will) and so does Schenn, then we can start comparing numbers.
There was a time when Joe Thornton had 7 points in his first 55 NHL games.
Daniel Tkaczuk, on the other hand, had 11 in 18 games (drafted the same year as Thornton). He led the Canadian WJC team in scoring in 1999.
Tzaczuk, highly regarded at the time, never played another NHL game. He is in a second tier Austrian league now.
My point is, you never can tell about young players, but I have a feeling Kadri is not the prospect the Leafs hope/wish he was. He looks like a player that wants the keys to the kingdom, but isn't willing to work for it. Schenn, on the other hand, looks like a guy destined to be a team captain in the NHL some day.
I could be wrong, but my money is on Schenn.