Tbh Kishi does this fun thing where he has Kisame react to several Akatsuki deaths and I think it’s a reflection of how Kishi sees them;
Kisame doesn’t have much respect for the Zombie Duo, treats their deaths as amusing more than anything.
Kisame seems disappointed in Deidara and directly praises his strength.
Kisame is actually surprised that someone could take down Orochimaru and holds no criticisms for Orochimaru