I think you're missing my point, but let's do a side by side analysis.
The Broadwell 53xxY series will probably perform on par with 4300U on SP3 under load due to much more efficient thermal managing on Y series VS the horrible load performance on SP3. The catch is, it has much lower TDP, silent computing, much better gpu performance, etc...but the selling point is that it's going to cost a fraction of what the SP3 costs.
Granted, you get the solid build quality with the SP3, and I'm all for that but you should realize what my point is- The SP3 which was marketed as the "one device that can replace and do everything", which was said to be the faster than 95% of ultrabooks out there is not what we're seeing. You can't even do light gaming on this machine. I think that it's fair for buyers to expect a machine of this caliber to be able to run simple games like LoL or WoW without their machine turning into a burning hot grill.
Going from SP2 to SP3, I think it's fair to say that we expected at least an equal performance, not a 30% drop in performance.
That being said, overall I do think the SP3 is an improvement over the SP2. I was just playing a devil's advocate in pointing out that MS failed to meet their originally set mission statements, and you can't just deny any valid complaints that we're seeing on this thread by dismissing them as being "trolls" or dressing up as MS fanboys. You might not have a problem with the SP3 because your needs might be different, but that doesn't mean others can't have any expectations. If anything, I'm optimistic about SP line, and calling it an end for SP line is stupid. But for what little mistake MS has made, they need to called out. All I'm saying.
I don't expect exact performance while driving a bigger, higher resolution display. If gaming is necessary, those users should chose the i7 model or look elsewhere.