They're two separate sentences.

Many, maybe most people have smartphones.

The most expensive of those have these stats.

> They're two separate sentences.

Right next to each other, in the same paragraph... are you really arguing it is not implied that high specs are intended to be relevant to the authors argument? If so what is the purpose of this sentence?

"many people have smartphones. They're so powerful, that some of them are equivalent to laptops from a few years ago."

I don't know how on Earth you can't parse this simple paragraph.