Thank you. I'm not even sure the SNES version was play-tested. 1. throw pass, 2. consult on-screen diagram in futile attempt to verify that yellow dot (ball) is moving toward red dot and that red dot is in front of black dot for catch, 3. watch the ball sail into computer player's arms with only a second to react, 4. interception often leads to touchdown since the computer player runs faster.
The only sure way to score is to block punt attempts and run them into your end zone. Grinding out a dozen running plays is another possibility, but you have to replace your fatigued running backs every other play. The NES version has its annoyances too, such as the wimpy quarterbacks have to be replaced after two plays, but is overall better.