I think that the results would also vary from product to product.
Let’s take for example a hardware store where every item is very unique due to it’s shape. i.e. a Hammer or a Screwdriver.
Let’s also assume that our user needs a hammer.
If we laid out all the tools on a 5 column grid and it would be easy for him to find the hammers between all the other tools because of it’s unique shape.
But then again, if the user lands into a page full of hammers with differences in size or material it would be “hard” to find the hammer he needs even with a 3 column / large image layout.
That’s a very interesting case study and I will definitely try a few things out in my next project.