Not sure why it’s catton vs yakemchuk. Catton is far from sure thing if catton can reach his potential then no reason yakemchuk can’t.
It’s Yakemchuk over Buium and Dickinson that was a bit worrying.
The Senators took Yakemchuk over Catton because they drafted for need, which is absolutely the correct move.
Ottawa lacks a true offensive threat on their blueline, good luck winning the cup these days, or even getting to the playoffs without one. Chabot is decent, but he's more dangerous in his breakout and transition ability, which he's excellent at. When the puck is in the offensive zone, Chabot is okay, but fairly mediocre for what you'd want out of your top offensive defenseman. Sanderson I don't think will ever have the offensive creativity to be elite in that role either.
Yakemchuk has the potential to be an elite offensive talent on the blueline. He has unbelievable hands, size, and good lateral skating for his size. He has a fantastic shot from the blueline, he scored 30 goals this year in the WHL. Chabot ranked 27th in p/gp among dmen this year. That's not good enough. Yakemchuk has toolkit to offer an upper echelon offensive threat on the blueline, which is something the truly elite teams in the league have.
As for why Yakemchuk was taken over Buium and Dickinson, it's because he plays the right side (rare to see offense generated from the right side, it's more valuable), and because he offers a physical edge as a bonus which these guys don't have (having an offensive threat who also can be a physical presence is a unicorn of a defenseman in today's NHL).