No, the Zapper is the name for the gun you used for Duckhunt and other shooting games, while the Wii sensor bar is for the Wii. He's talking NES, like, 1985.
And for the record- R.O.B. was awesome. Just no games actually used it.
And the Track & Field Pad was pretty cool too. But I guess Wii fit kind of replaced that. But you can do two player on the Track Pad.
I can't be 100% sure, but I'm pretty sure we played duck hunt on my dads old CRT rear projector.