Will Captain America and Tony Stark ever kill each other in battle and end the Avengers too ?

[Cmbmool]

In Civil War, Captain America had Tony Stark at his mercy and beaten, the only thing that stopped him was the public outcry over the destruction that their fighting has caused.

Now in New Avengers/Avengers, it's Captain America vs Tony.....again.... and once again they drag the rest of the Marvel Universe into the conflict. When all is said and done will they end up killing each other in such a similar way to T'challa's war with Namor ?

Will they truly end themselves in the process of battle and bring down the rest of the Marvel Universe with them in the process ?