>Ciel + Akiha = Rin
That explains why Rin is so shit.
But all Tsukihimes are great! It's not like Fate where there is a clear disparity.
>where there is a clear disparity.
Don't piss around
All the Fate heroines were low tier, no Rin is not a best. Only girls like Ilya or Bazett were worth anything, and originally some of them were Tsukihime girls.
Hisui > Akiha > Arcueid > Ciel > Kohaku
This is objectively, subjectively and unquestionably the true answer.