you can't tactically plan for teams that rely on individual spontaneity and creativity. teams that play off the cuff. there's no system to the way Madrid does things, it's all about individualism. and so Emery can't plan a tactic to stop that, and so his side struggles.
plus he can be slow to react and make changes. in every game where we've beat them (apart from the first one, where he was overwhelmed by Henry and Dani's brilliance) it's been because Pep has changed something at half-time and Emery hasn't reacted to it. his players tire, sure, but he struggles to tactically counterpunch.
and he's prone to overcoaching.
I'd love to talk to him about tactics, though. I bet he has an absolute cockload of ideas.