I know feats goes far in here but logic would dictate basic Superman would slaughter Thanos. You may say well Thanos beat guys who around Superman's level. Well in a logical forum this wouldn't happen. Thanos can't move a light speed. So he should never be able to land a hand on Superman.
No matter how durable Thanos is 1000s of Superman level punches moving at light speed should destroy him.
But how Marvel has build up Thanos over the years for some reason he would win in a comic book setting.