It does prioritize spinners over a portal, BUT only if no brawler is near them or near you. Brawlers are not detected as collision flag thus we have no walk to detect them proper or not do we have a great pathing system around them.
I rather attack the portal instead of spammclicking a spinner which you can't reach for 30 sec. Pretty sure jagex detetection will come and bann you even faster then
This also counts for the range suppport, don't really have a thing to know where they are if if you are able to hit the portal or not.
I've also tried a lot of things, but brawlers are annoying AF.
Khaleesi