Was it though? I fucking HAVE a copy of Rogue Trader, on my bookshelf. It's not competitive at all. It's narrative as shit.
The points costs, where they exist, are guidelines for creating narrative scenarios, generally with an actual GM.
This changed as that edition, and later editions progressed of course, but it was still pretty whacky and not balanced for quite a while.
2nd edition is an unbalanced shit show.
Rogue Trader certainly can be, but then that's kind of alright because it's about telling stories, and sometimes, some guys in the scenario are going to be hot dogshit or underdogs. Like if they have medieval weapons and armor versus Space Marines. (Even the "basically a Catachan by todays standards, but with a Bolter and Carapace Armor type.)
It's also fiddly because you actually have an optional rule for having your REAL maximum range be 10 times the listed range, but you have to roll a 6 followed by your normal to hit roll to hit, and you subtract 1 strength.
So you can be shooting at guys on the other side of the table/other tables. With bolters or lasguns. But it's going to be super innaccurate and even more comical than usual for lasguns because it's Strength 2, and considerably less accurate than Orks have ever been shooting.