I have both of them, size at around 10''-12'' each, and I think they are equally aggressive.
But there is little bit difference, based on mine, that my tig usually shows aggressiveness during the dark, in the other side, my juruense shows it all day and night.
It's just like that my juruense doesn't want any other fishes touch its barbel at anytime, except food.
Is that normal?