I’m trying to compare two strings. Using similar_text for these two strings:

$sim = similar_text(strtolower("Siena Cathedral"), strtolower("Siena Court"), $perc1);
$sim = similar_text(strtolower("Siena Cathedral"), strtolower("Cathedral of Siena"), $perc2);

Which results in:

61.538461538462%
54.545454545455%

Which to me is absolutely not correct. The second one should be the more similar result.

What changes can I make to this so that the second text is the more similar result?