I think this. KB is way more dominant in triathlon than Jakob in running. KB is winning/breaking records in short course (literally gold medal) and long course races (ironman world record holder and world champion) in the same season. That would be like Jakob winning the 1500 olympic gold and then setting a half marathon or marathon world record (with a world championship to boot) later that year. What KB is doing right now has literally never been done in the sport. Turning it into just a popularity contest tho and of course it it someone like Haaland wins as the world wide appeal of soccer exceeds chess, triathlon and running combined. I dont know enough about chess, but Magnus seems pretty untouchable so I would guess he is on a level of KB and above Jakob.
The question isn't who is most dominant in their obscure sport.
The question is who is the biggest "star" to Norwegians.
The biggest star in Norway right now (between Magnus and Jakob) is probably Jakob.
But I guess Jakob must be world leading for some more years, to achieve the same legend status as Magnus. Magnus achivements is like Jakob running 3.26 for 8-9 years in a row.
The biggest star of all right now, literally and figuratively, is Haaland. For me he is not even top 10, compared to other current Norwegian athletes.