Well, I don't know. Matthews wristers had an insane amount of power behind them, combined with his size and his reach where he could pull it out of the way of the defender and get his shot off in traffic, and he finished tied for 2nd in goals in his rookie season with playing just over 17 minutes and 2 and half per game on the powerplay. It'll be incredible if Bedard could do something similar as an 18 year old with 20+ minutes and out there for most of their powerplay.
It’s a known thing that Matthews plays with a pretty short stick, so much of his advantage is negated there. When he does deke, it tends to be close into his body. Matthews does not play the way you describe.
Matthews uses his short stick to generate a ton of torque and flex on his wrist shot. It also is a huge advantage for his curl drag shot which he’s become famous for. He also tends to find dead space very well, and positions himself well to receive pucks in tight and utilize his quick hands. One thing he doesn’t get enough credit for is how completely unafraid he is to score dirty goals. If you watch his 60 goals, so many are from just outside the blue paint.
People have said that playing with a shorter stick leaves Matthews more vulnerable to hits and contact, and he does get dinged up as the season goes on.
Bedard also plays with a very long stick for his height, so I don’t think there’s a reach advantage there at all. I think much of Bedard reaching his potential will be determined by how he plays in traffic. I don’t see it as a concern, as Bedard is completely unafraid of traffic in his career this far. Whether his smaller frame will hold up in terms of health is the real question.