Considering how we only see the relationship between these two from Kahmunrah's P.O.V in battle of the Smithsonian, This scene could've been the most emotional in the whole trilogy
Ahkmenrah: You don't tell me what I want
Kahmunrah: I don't need to tell you what you want it's obvious ¡You wanted the throne!
Ahkmenrah: You were the only one who wanted the throne, I just wanted a brother!
Kahmunrah: ...
---------------spanish version----------------
Ahkmenrah: Tú no sabes lo que quiero
Kahmunrah: No necesito saberlo lo que deseas es obvio ¡Deseabas el trono!
Ahkmenrah: Tú eras el único que quería el trono ¡Yo solo quería un hermano!
Kahmunrah: ...