The Aguav/Figy/Iapapa/Mago/Wiki Berries all have the same description.
If held by a Pokémon, it restores the user’s HP in a pinch, but it will cause confusion if the user hates the taste.
The Sitrus Berry on the other hand doesn't cause confusion. It's description reads:
A Berry to be consumed by Pokémon. If a Pokémon holds one, it can restore its own HP by a small amount during battle.
Note how the Sitrus Berry's description makes a point of it only healing a small amount, while the others don't. Sure, the others can potentially cause confusion, but it takes minimal trial and error online to find out if a specific Pokémon doesn't like the berry you gave it. So it seems to me that the Aguav/Figy/Iapapa/Mago/Wiki Berries all heal more health than the Sitrus Berry, but that raises another question;
Why on earth is the Sitrus Berry so much more popular?
Does it actually heal the same/more HP than the others? Are people just being lazy? What's going on?