Apple have put faster chips in their smartphones than in their laptops.
This is all alluded to in the article and the macrumors post that the article is based upon, here are some quotes:
> "Sure, that doesn’t mean the A11 Bionic can do all the things a desktop CPU does."
> "Though the iPhone X and the iPhone 8 offer impressive Geekbench scores, how that translates to real world performance remains to be seen."
There's no question that the iPhone chips deliver amazing performance, but there's a reason people still lug Macbooks around.
Geekbench always seems like an odd benchmark - the variability between runs alone is kind of odd. If I could run a compiler on an iPhone, for example, would I really see similar performance to my MBP?