You got that right, B2W2 was a cinematic masterpiece! I never really took notice of Serperior's defensive qualities mainly because of Contrary's immense power potential. Liking Mew is understandable, i think, but i never really found it to be too spectacular with 100 in every stat. (Even though it's all balanced so you can pick and choose which stats to focus on) Learning almost every move is no joke, though. As for Salamence, i used to not like it all that much, but then i tried it out and i found myself liking it somewhat. When compared to other dragons like Dragonite, Hydreigon, or even Flygon, Salamence didn't feel distinctive to me. Something that made it stand out, you know? But having Intimidate is a great tool up its sleeve, not to mention Moxie. Salamence definitely kicked it into high gear come ORAS when it got a Mega. It was so good that they had to nerf Aerilate!