I completely disagree. I think Gambrell has potential to be a 2C and Norris a 2W.
Based on what though? Norris scored about a point per game for the U18 NTDP in his draft year. Recently drafted players who put up similar numbers for the development program in their draft year include JT Miller, Reid Boucher, Nic Kerdiles, Anthony Louis, JT Compher, Alex Tuch and Dylan Larkin. So you've got three outright busts in Boucher, Kerdiles and Louis, a fourth line center in Compher and then three potentially really great outcomes.
But we have a year of NCAA production from Norris to compare to these guys too - Norris scored about 0.6 points per game in his freshman year at Michigan compared to Larkin's 1.3 points per game (more than double Norris' rate) for Michigan at the same age. Tuch was around 0.75 for BC in his draft+1 year and Miller was around a point per game in the OHL. If we're really lucky Norris turns into a similar player to Tuch or Miller but the most likely outcome is him falling in the Compher/Boucher/Kerdiles range of fringe NHL/good AHL player. Suomela is already at that level.