I was watching Rock Lee play this at SCG Philly and Platinum Emperion was definitely an interesting piece of tech to say the least. I think many of his opponents underestimated its value when they saw it with Probes or Thoughtseizes too.
It would be interesting to hear Rock Lee's take on how these new cards worked out for him over the course of the tournament. I was particularly intrigued by the addition of Fact or Fiction and Platinum Emperion and their applications at this point in time in this metagame...