Without disclosing the details for the sake of anonymity: I’ve found a severe mistake in a competing paper, making it harder to publish my own. The performance metrics of the competing paper are computed incorrectly, meaning that their actual error rates are much higher than what the authors claim to have.

The competing paper has already been published in the conference proceedings of AAAI. My question is how I should deal with this situation. – Should I report on that mistake in my own work? – Should I inform the AAAI organization about this? I’ve tried this using their contact form, but got no response whatsoever. – Anything else I can do with regard to the competing work to increase the odds of getting my paper published?

I’m 99 percent certain that it really is a mistake as I managed to run and debug the author’s code to confirm my suspicion.