pedal to the floor lets the cylinder fill with as much air as it can suck in to compress and give you your reading, throttle will act as a flow restrictor if left closed/idle.
But in my experience it doesnt make that much difference so dont expect much more when you do it again.
I wouldnt say they are fried, but just normal wear for a 20 year old engine.
Either way it is too low to last.