“Why is Gravi above Lumina?”
Gravi is above Lumina mainly due to his overwhelming relevance of being an anti-Relic tank on top of competing/ outshining current UL Legend true forms. Gravi performs excellently across 1 crown UL, Infernal Tower, and beyond as one of the most relevant tanks out there. His offensive power is also notable for making him a powerful melee generalist, a type of usage that isn’t as strong with Lumina. Both are also Alien tanks and have somewhat similar performances, albeit in different methods of tanking.
“Why is UF Mizli so high?”
UF Mizli defied all odds and most people’s expectations by being an extremely competent general backliner, similar in style to other top backliners like Sirius while also matching the offensive potential of units like Gao. Mizli stays relevant with her pierce to cover multiple parts of the field and her huge bulk which is comparable to that of Dasli. She also has great matchups against every Alien in the game.
"Why is Tekachi considered bad? I find him to tank his traits well."
Tekachi's problem is that all of his tanker traits are fulfilled by other non-uber units. Alien can be substituted with either Catellite or Jetpack, Angel with Ramen, and Floating with either Octopus or Carpenter. This becomes the same problem as Hanasaka where Tekachi won't meaningfully contribute to stalling in most scenarios compared to what can already be done.