This really did bother me. What if Porsche came out with a new 911 less powerful than the outgoing model? It simply wouldn't happen. They'd be a laughing stock. In reality, the new base 911 has at least the same performance as the outgoing S, and so on up the range.
Plus the use of an engine that's been in Lotus cars since 2009, and Toyotas since 2005. Remember: the comparisons between the Emira V6 and Porsche Cayman GTS 4.0 / GT4 are between a practically-obsolete supercharged (it only makes around 270bhp without) engine and a modern, high-revving naturally-aspirated motor.