How do you use by comparison in a sentence?

Explanation: To use this phrase, you must be comparing 2 or more things or objects, such as:

" Soccer is a world-wide sport played leisurely or competitively. 'By comparison', football can be played purely for the entertainment of the sport itself, or for competition between experienced teams in a shot to win a first-place trophy.

In my personal opinion, the phrase 'by comparison' is rarely used throughout the formation of sentences. When comparing two or more things/objects, I would use 'in comparison' rather than 'by comparison'.