Yeah. It's true that MATH1141 has pretty much zero influence on job prospects.
MATH1141 is designed to reward the students who are genuinely good at math for the sake of math, not just their ability to practice techniques (which is what high school maths mostly did). From what I've seen, MATH1141 gets rewarded with 'some' scaling, but MATH1131 is generally not scaled anywhere (up nor down). However MATH1131 does have a "cap" - for example, any mark above 91 is automatically brought back down to exactly 91.
The purpose for the cap is to provide incentive for those who should be doing 1141 to do it. Those that are really strong at math can do MATH1141, get brought up by scaling to marks like 87 and 93 (or for extremely talented students even 98 range), and essentially be well rewarded. Whereas those that do math purely because they're forced to can do 1131, perform adequately enough it, and not be dragged down by scaling and nor by a cap.
In your scenario, your marks suggest that you're capable of doing 1141, but I would not be able to predict how you'd go with it. If you want to go with the more relaxed option of 1131, nothing's really stopping you.
If you're completely unsure, you can do MATH1141, and then request with the head of first year maths studies to drop back down to MATH1131. Note that MATH1141 and MATH1131 sit the exact same assessment until the final exam, which is why this is possible. Of course, better give him an email first (Dr Jonathan Kress) to confirm this, but to my knowledge there's no problem with it.