Some people are exploiting the leaderboards. Last season it were 2 guys (2 necros - one support and one damage ) They were listed in the solo leaderboards with a too good time to be true.
This season the are listed again, but not the only ones. Top 2 wizards are basically the same, they both are listed with the same level and time.
It seems like it is a question of time until others are getting in touch with the exploit.
it’s not an exploit, they are blatantly cheating using a 3rd party ps4 save editor (savewizard). At least, that is my understanding. A solo GR should never have other support players listed for the same solo GR. It’s an easy fix for Blizzard to find these cheaters and remove them from the LBs and have Sony ban their PSN accounts, but alas, Blizzard doesn’t give 2 hoots about consoles…
Why Blizzard continues to refuse to make seasonal characters online saves is beyond me…it’s a simple thing to do.