Other than iGPU performance, I still wouldn't call Haswell any decent jump over Ivy, or even Sandy for that matter. Intel really isn't making any significant gains, at all. Wish AMD would get it's act together and give Intel a good beating for once.
It's because Intel switched their focus from increasing processing power year on year to maintaining a set level of processing power while drastically reducing energy consumption. Is Haswell faster than Sandy? Yes, definitely, especially with all the new instructions. Is Haswell considerably faster than Sandy? No.
Is Haswell massively more energy efficient than Sandy? Yes. I feel this was a good move by Intel and I feel after Broadwell when Skylake launches we will see a bit more of a focus back on performance.
I agree with you and would also like to see AMD smack Intel about again like back in the good old days but its just not happening. Intel spends more on R&D than AMD generates in revenue. Superior architectures + superior fabs.
Don't underestimate the PCI-e SSD, it's not just considerably faster, 35% - 100% depending on the capacity, but it also lays the groundwork for each new rMBP to incorporate the latest controllers and NAND cells without any penalty performance. You're also forgetting about the huge boost to iGPU performance,
Personally I cannot wait for the new Broadwell rMBP. If they include a GT 950M in the top version then I'll buy it on day one and just sell this one, as I do quite a bit of gaming on it. So some of us are very excited, we just haven't seen any news/rumours to talk much about it, what our expectations are have been discussed to death.
Potential for IGZO IPS display, faster SSD, more energy efficient CPU, 50% boost to dGPU, further refinements to battery chemistry and circuitry, USB Type-C 3.1? Full HD Facetime Camera. Yeh I can't wait.