Like Sundin, he has size, looks for the pass but more often than not takes the shot after using great hands to move into scoring position (e.g., curl and drag), his skating looking clumbersome but pretty centered and decent enough. Sundinlike in many ways.
Like Nieuwendyk, he is more of a shooter than a passer, with a top shelf sniper ability and maneuverability through traffic, clutch scoring by individual effort. Joe started his NHL career with back-to-back 50 goal seasons, and I remember how much he eagerly wanted the leader role, mature and talking team, the demeanor of Auston. Nieuwendyk in many ways.
I suspect Matthews would be happy to have the sort of career that the two HHOFers have had, even if his fan base reaches for the farthest stars in their comparisons.