How the hell was it not obvious he meant no benefit of multi core over twice powered single core?
Read however you want. I was pointing out the lack of soundness of what was written.
You cannot be serious here. I just repeated what he reportedly said, only generalizing the subject. Reading comprehension ftw indeed.
Seriously, I said lost in note taking for a reason.
He probably wanted to or even successfully did emphasize difficulty of multiprogramming. Whatever the case is, comparing equivalently powered multi core and single core is of little value as
(1) there aren't any equivalent high end single core (single hardware threaded) and multi core processors.
(2) the advantage of multi core is getting more power.
(3) neither developers nor hardware designers will go back on the single core ship after listening Carmack.
What he should have said (again maybe he did) is it is hard to develop, or some other obvious stuff like two cores are not twice as powerful as one of its core because of synchronization, on chip latency etc.