When we want to express that something or someone has the same qualities as something or someone else, for example Paul is as tall as John, the most common way to express this in Spanish is to use tan ... como.
See Using tan ... como = as ... as (comparatives with adjectives and adverbs)
But there is another way to express this.
When we are comparing two people/animals/things with each other, and we use the plural as the subject, we don't need to add "que". For example:
See also:Using tanto como with verbs and nouns to say as much/many ... as (comparatives) and Using tan ... como = as ... as (comparatives with adjectives and adverbs)