That video draws a misguided and erroneous conclusion. interestingly, yesterdays Broadwell announcement by Intel includes images and reference to all the kit for power, temperature, and clock optimization (throttling) and its obvious to this observer that its all working as designed by Intel.
The bottom line is the SP3 does throttle. Its not as bad as Grumpy makes it out to be nor is it all bad software that causes it however, bad software will get exposed easily. lets move on, we can agree to disagree.
SP3 will serve the majority of users quite well with for more capabilities and heavier workloads than an iPad or Android and has ultrabook class performance. The SP2 is still a viable less than one year old machine which will be more suitable to high end users unwilling to compromise. For myself (and I recommend this approach to others YMMV) I use another machine for high end workloads and never expected miracles from this excellent tablet/hybrid we call SP3. I did expect good performance for normal to med-high workloads and it delivers.