- MA5C 7RUTH
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- Exalted Legendary Member
Dude, hope it is only one account and then you could taunt your brother.
Regardless, it is probably for all accounts on the Xbox. I have only had to download the Mythic Maps once and they worked for my account, my brother's, and 4 of my friends. So we have Mythic for 6 accounts but only downloaded them once (to my account.)
Johnson will probably work the same way.