Dillon's strength is not actually in what he draws. While he can draw anything with a reasonable modicum of skill, he's not amazing at it.
What's Dillon's strength and why he's so good, is that not only does he possess remarkable clarity - while everything draws is unassuming and a little plain, we know exactly what it's supposed to be - but in his composition. Not just the organisation of elements within panels, but panels on a page. Everything is clear, easy to see, and it's ALL their, and then he puts space in for speech bubbles. Damn fine craftsman.