Human interface guide: look for options to make the user interface more pleasant and understandable

We are building a lot of small strategic tools. Most of them are really simple and should be very easy to understand.

One of them is the construction to execute the comparison of several elements. The comparison is made in pairs.

It sounds easy, but the best user interface that I can think of is the following:
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Here, the user needs to UPDATE one of the options in the pair, then the process changes to the next, and so on.

This user interface feels really strange, especially in extreme cases when the content of the elements becomes very long or very short (as in the images above).
It just is not sexy absolutely.

I was hoping to get some kind of guideline or suggestion to guide me in the right direction.

Thank you,