I have no idea what Superiority means or what it does. Can anyone help me understand??
Superiority was introduced in book 2 of story content (after act 6). The first node that you circled tells you what is needed to gain superiority. In this case your attacker must be the same class as the defender (science) to gain superiority. The second node you posted shows you the advantage you gain by obtaining superiority. It is rarely necessary, but often helpful.
If you are up against Korg every skill champion (only for this node, there are different superiority nodes) will gain the bonus that the 2nd node offers. If they belong to the other 5 classes then they won't get the superiority bonus
If champion is X they gain Superiority + If champ has Superiority then Y happens
In this case if your fighting iBomb so all science champions will gain Superiority and when you knock him down he gains a more potent weakness debuff of -50% for 15 seconds.
Without Superiority (all other classes) when iBomb gets knocked down he would only receive a -10% weakness debuff for 10 seconds.
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Edit: Thought this was right, guess not lol
If champion is X they gain Superiority
+
If champ has Superiority then Y happens
In this case if your fighting iBomb so all science champions will gain Superiority and when you knock him down he gains a more potent weakness debuff of -50% for 15 seconds.
Without Superiority (all other classes) when iBomb gets knocked down he would only receive a -10% weakness debuff for 10 seconds.
There are superiority nodes that specify a condition, and then nodes that trigger or don’t trigger based on whether that condition is true.