Nintendo is copying everyone and it's blatantly obvious

[theprof00]

jarrod said:
The formal announcement and reveal of N64's controller came in late 1995 at Nintendo's Shoshinkai exhibition and well predate public unveilings of both the PS Dual Analog pad (which predated the DualShock) and Saturn 3D NiGHTS pad. The analog stick's design was supposedly finalized in mid 1994, when Super Mario 64 started formal R&D.

It's generally seen that both Sega and Sony's new controllers were a direct response to the N64 controller, which wowed the press who played Mario 64 in 1995.

As for actual releases...

Nintendo 64 Pad: June 23 1996
NiGHTS 3D Pad: July 5 1996
Dual Analog Pad: April 25 1997

http://en.wikipedia.org/wiki/PlayStation_Analog_Joystick

The dual analog controller was a hardware revision of this model.

This was unveiled in April '95, before the Shoshinkai exhibition.

This is the honest to goodness dual analog controller, except here, the analogs are primary with everything else secondary. Even the ability to push the buttons in later on harkens back to the flickswitch on top of the analog.