Your logic consisted of in a Litchi mirror, a Litchi will have a hard time against the other Litchi because Litchi's tools are so good vs herself.
Well guess what? The other Litchi is feeling the EXACT SAME THING.
Look. An Ara vs Lambda matchup is 3:7. Why? For Ara, the matchup is 3:7. For Lambda on the other side, the matchup is 3:7.
((3+3)/2) : ((7+7)/2) = 3:7. Order of operations is hard, I know, but you're all past fifth grade now so I'm sure you'll get it.
Litchi vs Litchi is, like someone said before, 4-6 for one Litchi, and 6-4 for the other Litchi.
Thus, ((4+6)/2) : ((6+4)/2) = Goddamn 5:5.
Sure, the mirror is difficult. Hell, certain mirrors may make it 8-2 for each player. But again, using basic math, it will always average to 5:5.
What we've said before is WE KNOW certain mirrors are more difficult than others. That doesn't give you the right to make arbitrary matchups where you act like it's only you playing and not TWO GODDAMN PEOPLE. We can say that certain mirrors are harder than others. Ara mirrors >>> Ragna Mirrors or Tsubaki Mirrors, sure. But all mirrors will statistically still boil down to the average, which is 5:5, and ALWAYS 5:5.
This has been basic math/statistics class with Farranpoison, please pay your tuition or gtfo.