It's not precedence to point at one unrelated hardware feature in a different generation of likewise unrelated hardware and then somehow extrapolating that into an internet rumor regarding two different generations of hardware being true.
Likewise I'm not wrong when I said that these rumors really are almost never true. They really are almost never true! This basic sort of rumor has been around for ages, and they're a dime a dozen whenever a new console generation is about to come out, surely you've noticed that by now.
For example, some nutty guy who went under the handle of Chaphack (and a whole bunch of similar variations, because he kept getting banned) at Beyond3D, who was a huge MS fanboy, claimed before what later became known as Xbox 360 was revealed that it would have a "Tejas" Pentium4 CPU clocked at 10GHz. As we now know, that wasn't quite the case. lol
The basic principle behind these rumors and how they proliferate are easy enough to understand; people really want their preferred console to be special in some way. Hence all the dumb stuff we heard about the Wii, and the Wii U too, and many other consoles besides. Hell, console manufacturers sometimes engage in such rumormongery themselves, like when Sony BS-ingly claimed that exporting PS2s to Iraq had been banned by the UN, because the consoles were allegedly so powerful they could be converted into control systems for cruise missiles! lol
And not long ago I heard some loose talk about MS special sauce they'd held back about the Xbox SeX for example. But we've now had a hotchips presentation about the machine and there doesn't seem to be any such sauce in there, or they'd most likely mentioned it. Because why wouldn't they? A hot chips presentation is meant to brag about the machine and its capabilities, why leave stuff out on purpose, thus making it look weaker. And the thing goes on sale in like two months or maybe three anyhow. The time for keeping hardware secrets for this coming gen of consoles is essentially up.
So one oddball feature from PS Pro doesn't give this rumor any special credibility. It's just yet one more unsubstantiated claim with nothing in reality to back it up.