Notice how you con rod and counter weights look wet......this tells me you had sufficient oil in the mix......look back at my pics of the same area....dry as a bone....another thing that will kill a saw quickly is running a dull chain...this allows the motor to rev higher for longer periods. Your saw was in good shape, pretty low hour, very similar condition to the one I'm working on here. You can tell this by the visible, horizontal machine marks on the piston thrust faces (front and back)....a saw with many hours on it these wear away and the piston skirt is smooth and shiny
When you pulled the cyl did the cyl base gasket come off in one piece or was it broken?