Well first of all he's fast and defensibly reliable out playing Bennett in the playoffs with 10 points and the game 7 ot winner
2nd he's a big body ready to fight all the gritty puck battles, and he's naturally bigger to block shots. In tight checking playoff series he naturally will be harder to take the puck off of, and vice versa his speed and size will let him completely strip people of the puck definition of a shutdown guy, as well he can protect the puck really well
inb4 I am told size has nothing to do with takeaways (EHLERSS DERRRR KAPANNEEE DPHARPP)
3rd a shutdown system plays a physical type of hockey that fills it's line with fast players that can score off of turnovers and not necessarily relying on sniping goals from the perimeter, dirty goal orientated team that can still has the skill on breakaways. Ritchie can do both but he excels in a cycle system and specifically at finding the open ice to find the tap in, his size aids him in this.
He definately needs to work on his two way game, so does every other player in the entire league
He's a shutdown guy, he has already demonstrated a lot of hockey IQ it will be used for his two way game and as his stick checking devleop even more
Wut? What are you even talking about?