I'm almost certain as well. I beat Fangol with a stack of Black Knights (111), but lost 1 right in the end (got way too overconfident while mopping up the treasure chests and was left without rage and insufficient mana for lvl 1 evlin). Then I decided to do it with 2 stacks - the Black Dragons (6) and the Black Knights (111). In both cases I got the same amount of experience.
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