Can we just take a minute and look at something. It’s never been confirmed nor denied if halo and destiny are in the same universe. However if they are then it’s high possible that the timeframe halo took place and the start of that the 2 would be together therefor the event of halo may of lead the world into the golden age where we strived for decades. And seeing how master chief isn’t immortal during them years he dies. Thus at later point being revived as a guardian... how’s that tickle you fancy. Neither is stronger because master chief is a guardian!