Caufield made huge improvements defensively, the last season.
Being on a line with Suzuki and Slaf, he plays a lot against tougher competition, yet he had the best +/- stats of the trio.
And the eye test is consistent with his stats.
The problem being he breaks a lot of opposing team offensive opportunities, but more often than not his lack of reach and strength prevent him from capitalizing on those plays he breaks. More often than not the opposing player manage to keep the puck.
So he's more or less like a bug fly defensively : he's good enough to annoy and gain a few seconds for his teammates to adjust defensively, but not good enough to definitively strip the puck away from opponents.
Not for nothing, but Kyrou also improved defensively this season. His stats aren't great but our D is really bad. He is high to middle on our team in various defensive metrics. He has the skills to be very good. He was on a line with Thomas and Buchnevich a ton this season and they were out against the other teams best forwards consistently.
He can use his speed on the back check. He has broken up a l a bunch of plays hustling back, and he is sneaky good as stripping the puck from behind when he catches up. He can be good on the board at coming out with the puck. His positioning is also generally pretty good.
It comes down to consistent effort on his part. And that improved greatly after Berube was fired. Its a small sample size. but if he puts in the work, he is a plus level defensive forward. He won't win the Selke, but he can be a positive. He just needs to work consistently.
It doesn't matter, because Caufield vs Kyrou isn't the issue. There is no trades to be had. Just wanted to add that to people who have not watched a ton of Kyrou this year.