[sdwr]

As a user at the time, Chrome just looked better than FF. It was fresh and clean. The logo was brighter, the UI was rounder and clearer.

FF looked like a Windows 98 settings menu by comparison. Tiny, fiddly, cramped controls.

[paulryanrogers]

Also a user at the time. Chrome was barren, empty, and used too much memory. It used tricks to feel faster yet wasn't significantly better for the sites I used. Chrome was also less customizable.