I'd just eyeball it on a good monitor with waveform/vectorscope. Those settings are generally not equivalent between manufacturers. And sorry if that's what you didn't want to hear but what you're asking for is like saying here's two people who speak two different languages, now make them understand each other without a translator and without even being in the same room together. :)
If the cameras can't be in the same room together simply have them both shoot a color chart and send each other stills in email until the settings are close enough. As long as you're in the ballpark you'll be fine when it comes time to color grade you can finesse.