With the quarterly accusations flying that companies talk down their outlook to analysts in order to beat lowered expectations, Dimon wrote in an email to CNBC: "Report two real numbers; this year versus last year."
He's saying take the analyst estimate out of the equation, and hold companies accountable on how their businesses have grown or shrunk compared to the same quarter a year earlier.
To be sure, Wall Street certainly gets those numbers and myriad other metrics, but generally holds companies most accountable to how their numbers compare to analyst expectations.
It's worth noting that JPMorgan beat Wall Street estimates with its earnings this week. But first-quarter profit fell 6.7 percent from a year earlier.