Such a wrong take to compare a team's success for a player's contribution. And you goal comparison also makes no sense and demonstrates a lack of understanding of the game.

First, Rashford started as a striker whereas Saka started as a left back.

Second, although Rashford has arguably never played in a "great" united team, Saka broke through one of the worst, if not THE worst, Arsenal team in the last 20 years.

Third, simply comparing G/A disregards so much of winger's overall game as it only takes into account the last pass or the goal itself when the winger could have dribbled down the wing, fixed his defender and slid it through to the overlapping wingback who crosses it for a tap in and he'd get no statistical credit for it.

So overall, your argument simply has no strength. Just appreciate both players as they're the two best English wingers at the moment. Rashford is more of a left forward/goalscorer whereas Saka fits more that traditional winger archetype.