This is the 3098th most frequent Russian word.
качеству
The Russian word "качеству" means "quality" (in the dative case).
Here, "качеству" indicates the characteristic being used as a standard for comparison.
Этот товар превосходит по качеству конкурирующие аналоги.
This product surpasses competing counterparts in quality.
In this usage, "качеству" relates to a specific aspect (image quality) being evaluated.
По качеству изображения эта камера превосходит все ожидания.
In terms of image quality, this camera exceeds all expectations.
The word "качеству" here refers to a notable characteristic or feature of something abstract (his approach).