Earthworm vs Loki
OU - EW, UU - Loki, Uber - EW
Easily the best match here. I think it will come down to Ubers.
Mien. vs Gouki
OU - Gouki, UU - Gouki, Uber - Gouki
Gouki is the most well rounded battler here, and I am not sure how Mien.'s strategy will hold up in this type of format.
Gouki getting revenge on Earthworm in the Finals.
Sorry to the other 4, but I really know nothing about your battling styles to even make a choice.