I saw both versions, which is an interesting experience. Both were good in both roles, but I must say, I think Benedict Cumberbatch was better as the creature, and Jonny Lee Miller was also better at the creature. But both were also really good as Frankenstein, so this was a great experience. Can we have more of this? Actors switching roles all the time?
They switched off roles who played who in this production and having seen both I can say that Cumberbatch is a better creature and JLM is a better Frankenstein.
Both performances are utterly fantastic though.