... maybe I didn't express myself well. You could see that Sarek loved Amanda in TOS (okay, not at first) but I just couldn't imagine him telling that to Prime Spock or telling him to embrace his emotions. NuSarek didn't seem that different at the beginning (with him telling Spock he married his mother because it was logical) but then he lost both his planet and his wife. I suppose that if the same thing had happened to Prime Sarek, he could have had the same reaction.
I thought you expressed yourself perfectly the first time, and I concur with your view