Flames fans are being ridiculously critical of Valimaki's season. He struggled at times with his defensive decision making (primarily from being to aggressive in the offensive and neutral zone)and as a result made some glaring errors that stuck out like a sore thumb and resulted in direct goals against. However, he was also a bi product of absolutely terrible goaltending, generally poor puck luck, and having to play with a defensive partner who was also trying to acclimatize to the north American game. Nesterov was definitively worse and he was the veteran on that pairing.
Everyone is also seemingly overlooking the fact that he unfortunately missed nearly two full seasons of development post draft, and was playing in his rookie season as a result. Despite all this his analytics were extremely strong, and he certainly wasn't overmatched as everyone in here is indicating.
CF - 54.1%
CFRel - +2.2%
FF% - 51.8%
SF% - 50.8%
SCF% - 52.25%
HDCF% - 53.88%
xG% - 53.54%
Jusso is going to be one hell of a defensemen in this league, and a slower start than anticipated doesn't change that. He had overly hefty expectations placed on him due to his dominance in the Liiga to start the year.