We did this once before with the classic flight vs. invisibility. This time the parameters are as follows:
Superhuman Strength: You possess superhuman strength enabling you to lift (press) 5 tons (10,000 lbs./4,500 kg) under optimal conditions. This is sufficient power to lift a mid-size car over your head or punch through a 3-inch thick oak door in one blow.
Superhuman Speed: You possess the ability to move at speeds up to 500 mph, with reflexes and sensory perception to match. At this rate of speed opponents appear to be moving in slow motion.
Both powers imply any physical adaptations necessary to use them safely.