I thought it was fairly decent, everyone would've been like, "IKE IS A FREAKIN DUMBASS FOR KILLING BK AND HE DOESN'T EVEN KNOW WHO HE IS!!" and it would've been weird, ike would have fought him, and as he was dying figured out it was Zelgius, this way Ike could prepare for what would come.
Ok, that makes sense.
Lehran is incredibly smart and cunning, Almedha is somewhat(for lack of a better phrase) blinded by love, because she is so obbsesed with finding or keeping pelleas safe.
Another thing to take into consideration aside from Lehran most likely having better base magic is that Almedha might've wanted to stay neutral because she was a dragon, so learning magic would not help her acheive this goal.