In this case it's not just marketing speech: the new top end CPU is i9-9900k, it's ALMOST 2x faster than the previous top end CPU (i7-7700k) for multi-core benchmark.
Of course it's almost 2x faster; it has 2x the cores. Meanwhile the single-core score is almost the same for both. I've never seen anyone try to put together a good breakdown on how various common workflows stack up, but I would bet that most benefit very little from the extra 4 cores.
have you never seen apple reviews by third parties? Their performance and battery estimates nearly always pan out, if they aren't a little pessimistic.
