Oh come on... Nomura-san created super awesome trailers for Versus that did have gameplay. Didn't he even claim that the ambition for Versus got so big that it had to get pushed to PS4? He was doing work. Nomura-san has distanced himself because he's busy with other projects and Tabata has taken cover XV. Hopefully he's not bitter anymore. It would be awesome to see him shaking Tabata's hand at Uncovered: Final Fantasy XV.
Weren't those pretty much just tech demos though? BTW my comment wasn't a dig at Nomura. He couldn't get the project moving. For whatever reason. Mostly I would assume due to SE's mismanagement. FF14 took priority and they wanted 2 more sequels for FF13.