If you want to get a better idea about corsi you should post the players zone starts. It makes a huge difference in corsi percentages.
It is the main reason Beagle was one of the worst in the league in corsi. Its even lower this year in Vancouver but 80% of his zone starts are in the defensive zone.
A player like Djoos would have an inflated corsi because he is sheltered. His corsi is almost identical to Siegenthalers this year but he has way more offensive zone starts than Siegenthaler. Surprisingly Siegenthaler actually has more defensive zone starts than offensive. Defensive zone starts for Djoos are only around 42%.
This is one of the reasons corsi is such an unreliable stat. There are other factors as well. It doesnt take into account what a players role is on that team. It doesnt take into account who his linemates are which us important since corsi is actually a 5 on 5 stat. It also doesnt take into account who you are matched up against. So if you are a defensive zone specialist like a guy like Beagle Hus corsi will obviously be lower, not only because of zone starts but because he is matched up against top players. There is so much more to the corsi stat that you can't see. All you see is the percentage. The stats is incomplete. It is the most inaccurate stat in hockey and it doesnt even actually measure what they say it does.
And you live and die by that stat.
Serious question for you to ponder, why would one 5/6 man have so many more defensive zone starts than his replacement 5/6 dman does? Hint, it's not entirely about when the coach sends him out there for the first faceoff of his shift.
It has a lot to do with one of them having more ability to get the puck out, into the other teams zone and get faceoffs there. This should be obvious to people who have watched Siegs/Bowey vs Djoos play. Or the same point in the flip side, two of those guys struggle to clear the zone as efficiently a one of those guys. So they take more shots against which Holtby stops which leads them to more faceoffs in their zone.
Djoos strength is getting the puck out of his zone quickly and efficiently to move the team to offense. He does that far far better than Siegs or Bowey, despite not being as physical as they are. He works very well with Orpik that way unlike both Siegs and Bowey.
That fact which seemingly escapes you is a big part of why Djoos has many more shots attempted for his team vs against his team when he's on the ice. He's clearing the zone and setting up the offense far better than his peers.