Jack Four Offsuit vs Ace Three Suited

At the flop:
Winning 28% of the time
Tied 0% of the time
Losing 72% of the time

At the Turn:
Winning 33.06% of the time
Tied 0% of the time
Losing 66.94% of the time

At the River:
Winning 36.67% of the time(10.27% with trips or better)
Tied 0.38% of the time
Losing 62.95% of the time(2.61% with trips or better)