I am not sure I understand the distinction you are making between achievements and value. I think he means instead of saying "I delivered X project" or "I am

I am not sure I understand the distinction you are making between achievements and value. I think he means instead of saying "I delivered X project" or "I am the go to guy for architectural questions" you would say "X project which I delivered now earns the company $Y million" or "my expertise at X system saves the company $Y dollars in support contracts". You want them to see that the money you save or earn the company is worth more than the raise you are requesting.