I looked up the operator's manual for the Powermatic panel saw ($5300). Some phrases from the manual:
With respect to rip cuts:
"Support the upper piece to prevent it from
pinching the blade or the kerf protector, or
falling away from the machine."
In general:
"Panel saws are for cutting large panels down
to size. As the panel gets smaller, other types
of tools become safer and more convenient to
use. "
So it looks like the panel saw is not a replacement for a table saw. $5300 would be a lot to pay, just to break down a 4x8 sheet. And with respect to rip cuts, like Bruce said, you would have to use one hand to keep the upper piece from binding or breaking, while operating the saw with the other hand.
So with respect to the OP's original questions, I don't see either the panel saw or the track saw as a viable alternative to a table saw for production cuts in plywood. Make some good infeed and outfeed tables for the table saw, that will help a lot.