He's probably just referring to PS5
But no seriously this doesnt make sense unless MS was using a sliding RDNA2 flops scale in describing the Series X as 2X X1X (that's a lotta X's).
A quick refresher tells me a 5700XT is 9.7 TF (boost clocks only?) and that the RTX 2080 is only 20% faster than the 5700XT and that's according to Tech Power Up benchmarks/performance summary which are consistently Nvidia biased for some reason vs other websites (I just use them because they do a performance graph across many cards), meaning the real delta could be lower around 10-15%.
I guess if the rumours of a 40 CU/2.0 ghz/10.24 TFlop PS5 are true (I believe this is likely), then Jen might have a competitive point vs that console, even then seems a bit dicey given RDNA2 should have some efficiency improvements.
Again vs Series X it only makes sense if it's only in that 9-10 TF area as well and not 12TF, which according to the DF article "sources" say it is 12TF.
In the end, I do the all encompassing *shrug* aka "idk" as the kids say.