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Ha, where did you get that gem? I said nothing of the sort, I think you need to sit back, have a beer, and work on your reading comprehension. I said that we have gear that can't handle a 1080 signal, so we have to drop it to 720, or 1600x900 (usually 720 since it's just more common). So when you run 720 through your entire production, for the best signal quality you want all your sources to have the same resolution you run to outputs. Which means all laptops need to be set to 720. And a native 720 will look cleaner than a 1080 downscaled to 720, that's just the fact of compression. I don't really care if any of them can output 4k, we DON'T USE IT. The highest resolution we use is 1080 if all the gear on the show supports it. Otherwise, everything is usually run in 720.

I'm sorry, but I seem to have assumed that you understood that a Mac can output more than just the resolution of what you see on the screen through the video ports. . . but apparently you think Macs can only duplicate or mirror the resolutions of the Mac's built in screens. . . nothing could be further from the truth. ANY Mac can out put any of the screen resolutions you seem to think are not possible to a Mac. Macs are used in High Definition Video production all the time. . . but you seem to be blissfully unaware of that fact.

I think I was right when I said you don't know Macs.

ANY Mac can out put any of the screen resolutions you seem to think are not possible to a Mac

But not naturally. Out of the box, many Macs don't output 16:9 (except 1080) for whatever reason Jobs had for that. Yes, you can download ScreenResX or some other program, but many of the Macs I've dealt with don't naturally allow for 1280x720, which is the specific resolution I want. You don't seem to understand that in the world of corporate AV, trying to get the best picture with the gear you have doesn't mean 4k or 8k or anything like that.