If your competitor is "failing" already, I am not sure why you feel the need to publish a statement at all. It would be legally safer to let him fail on his own.
That said, it would not ordinarily be defamation to publish true statements of fact. Truth is a pretty solid defense against any claim of defamation.
However, true statements of fact can be worded in such a way, or combined together in such a way, or edited in such a way, that the final presentation is not exactly the complete and honest truth. Political ads are a good example of this.
Unlike political speech which is offered the greatest protection under our laws, it is legally important with "commercial" speech (statements made for the purpose of business or trade) that what is said does not distort, mislead, misrepresent, exaggerate or deceive consumers. This becomes even more important when the statements made are about a competing business that may suffer economic harm as a result of a publication.
I recommend that you review with an attorney in your area the exact text of what you intend to publish, prior to any publication - if you are convinced it is necessary to publish anything at all. This review by an attorney is even wiser if, as you say, a lawsuit for you is "not feasible, nor prudent." Otherwise you could find the choice of a lawsuit is not yours to make. You could wind up being a defendant.