The difference from the worlds still stands because we don't see any indestructible titan we don't actually get to alter and bend reality as a warlock. Your comparing myths and legends from one universe to actual recorded facts in the other universe. You can't compare lore to a military dossier because lore, myths, and legend at their core are hyperbole of actual events. Guardians still die. Titans still get destroyed by any normal gun. Warlock powers are still very limited. Guardians do seem to be immortal but only if a ghost is near the traveler's light and ghosts can be killed which a trained military operative would notice. If you include lore and the myths surrounding guardians and not just facts you have to do the same for master chief. And the lore and myths surrounding him from 3 different alien races is that he is an immortal unstoppable demon of war not a simple individual but a single undying force of war that can (and has) slay armies alone. I'm not a halo fan boy I simply know the character. I'm a desticle and want guardians to be stronger faster and more powerful but I will not make arguments on their behalf based on assumptions and myths without including Chief's assumptions and myths because omitting information or including a type of information on one side only is a bias argument and not an actual comparison. Because if we include all the myths and assumptions based on them of guardians, chief still wins because of current assumptions about him being a crafted and perfected template of the forerunner Bornsteller and his abilities to be recognised as him by forerunner technologies such as the monitors like guilty spark. At that point it's no longer a guardian vs chief its a guardian vs one of the most powerful forerunners to have ever existed in the halo universe who has access and capability to control and manipulate all forerunner tech that recognizes Bornsteller(this includes the halo rings)