From watching in AAU I think Roach will be every bit as good as Tre's freshman year offensively. He is a better penetrator in the lane than the freshman Tre. Steward every bit as good offensively as Cassius without the elite athleticism. Dunking is secondary. Both were good defenders, just not on Tre's level. But Roach is capable.
Neither statement is implying that Roach is better than today's Tre or Steward than Stanley 2 years from now. Freshman year to freshman year.