Universal scalability

3 Rounds for time:

500 meter row
12 - Dead-lift body-weight
21 - Box-jumps, 20 inch box

What if one could not row 500 meters, dead-lift body-weight or jump upon a box?

Could you scale this workout?

Maybe something like:

250 meter row
12 - Dead-lift – 1/2 body-weight
21 - Step ups, 8 inch box

OR

12 - Upright rows (wooden dowel or training plates)

12 - Dead-lifts (wooden dowel or training plates)
12 - Steps, marching in place

Is one permutation any less functional than the other?