Tz2000Super awesome question. The biggest difference is that Horween Chromexcel has a smoother, more polished grain where the Dublin has a very intense grain character. The Chromexcel has a softer handfeel where the Dublin has "veggy bite" (yeah I made up that term) when you hold the wallet. What I mean by "veggy bite" is that it feels like a firmer vegetable tanned leather and has an interesting supple firmness to it. The Dublin is also finished with a hard wax on the surface which creates a brighter luster and a slightly more grey color. Hope this helps!
attached is black CXL
attached is black CXL