Your evidences still don't enough to point out they're alt accounts cause there are a lot of stupid guys in this forum are trying to destroy other higher rank account by this way. Do you think a Legendary user in this forum would have a mistake like this? same ETH address in the same campaign? I don't think so. If these accounts give merit for each other, I can ensure that they are alts but for now, it's still not clearly.
I cannot destroy the reputation of those Legendary users because on the first time I saw it, I was shocked that's why I reviewed it clearly. Why do they need to sharing/exchanging their merits? that is not my basis boy. That proof is enough because no stupid users shared their wallet address to others.