I have just had a look at whispbar (Popular racks in Australia) for your vehicle.http://www.whispbar.com.au/cars/nissan/ ... suv-129934
You will notice that regardless of whether you choose the standard square bars, the better slim quiet bars or the heavy duty extra thick bars your weight limit remains at 75 kg. this is because it actually has nothing to do with the weight the racks are tested at, it's the factory mounting point of your vehicle that was designed by Nissan.
At a maximum weight capacity of 75kg you would be silly to mount 2 pro anglers (90+kg combined unloaded) and if something happened your insurance company would not pay for any damage to your own car or a 3rd party and you have overloaded your car to an unsafe level.
Call your local Nissan dealer or read your user manual for more info.
Mods: please leave the link in my post as it is great reference help for the user. I am not affiliated with this company in any way and have no commercial or monetary gain from this post.