Note the tweet says "similar" to what was done with DR3, not same. Ergo the tweet can't really be interpreted to mean it'll only ever come to PC and never to PS4.
The fact that no one, even after all the fuss has said "the game will never get on to PS4" is more and more indicating that eventually is can, if SE so desires.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix