What does Thorn have to do with Kareha? Thorn's counterpart is Wakaba.

Anyway, the version of Shiichan on world4ch is bust. It's not a case of feature versus feature here, Shiichan simply doesn't work. It's not worth comparing until it doesn't break regularly.

If Shii were still working on it might be different, but Shiichan is effectively a dead project which incidentally has a closed and broken version working on world4ch.