よりも質が

than … in quality

→ より
phrase Rare #43,265
than … in quality This phrase introduces a comparison; the following adjective or verb says whether the quality is better, worse, or otherwise different.
JA: この店のコーヒーは、あの店のコーヒーよりも質が高い。
EN: This shop’s coffee is higher in quality than that shop’s.

自分が賢いと信じている間抜けは、むしろただの間抜けよりも質が悪い。

A fool who believes he’s smart is worse than a mere fool.

彼が今夜食べた夕食はあの夕食よりも質が劣っていた。

The dinner he had tonight was inferior to that one.

この布はあれよりも質がいいですよ。

This fabric is better quality than that one.