Seven Two Offsuit vs Ace Eight Offsuit

At the flop:
Winning 25.69% of the time
Tied 0% of the time
Losing 74.31% of the time

At the Turn:
Winning 29.65% of the time
Tied 0% of the time
Losing 70.35% of the time

At the River:
Winning 32% of the time(9.22% with trips or better)
Tied 0.33% of the time
Losing 67.67% of the time(2.3% with trips or better)