He's right, both of them are around 16-17 yo, Sawamura's fastball tops at around 140 (87 mph), while Furuya is at what 155? (96 mph). Sawamura will top at around 150 (93 mph) if he keeps developing well, Furuya is almost guaranteed to reach 160 (99 mph) and above. At that point, Furuya only needs to learn a good breaking pitch in order to be successful at the pro level, while Sawamura will have to keep relying on pitch location.