As I understand, temperature is a measure of how fast atoms and molecules are vibrating, and not a measure of how much energy per unit area of contact can be transferred in a unit time.
The difference is that the water molecules are more tightly packed, than the air molecules in the oven. In space, they are quite far apart.
..and: please don't! :)
Fast reflexes won't help your hand to recover from a bad burn, they won't prevent it either, your hand is much too large to be immersed fully and retracted before substantial damage will occur.
> Temperature measures how fast particles are moving, whereas heat measures the total amount of energy that they transfer.