Expression for advantages of solution being disadvantages of alternatives

If you want to be a bit verbose and humorous, you could just repeat the fact verbatim and put the sentence as if it was a clear example/counterexample.

Example: You sell your car and do all your traveling by bicycle. That is environmentally friendly and your personal health benefits. On the other hand, shopping and quick, long-distance mobility is limited.

So you could say:

On the one hand, I sold my car. On the other hand, I sold my car!

Colloquially, we might say

It's six of one, half a dozen of the other.

or

It's a wash.

or more technically,

There's no net benefit.

or

The net benefit is zero.

Substitute other nouns for benefit at will.