Maybe by a very little, but I like the SIC ring, the more tangle-resistant design, and the "jewelry-like" appearance of Fuji, and my experience with Fuji titanium alloy. Some, like Pac Bay, call their "titanium" guides solid titanium. ALL "titanium" guides are alloys of titanium and other metals, and I think they are all different. One brand, not Pac Bay, is very easy to bend, and they'll only take a few bend cycles to break. Not saying the Pac Bays are not good, but I'll go Fuji.
The right combination of yield strength and flex, reliability (related to ring retention, mostly), finish (no burrs on the underside to scratch or cut the blank, smooth and well polished), durable (doesn't scuff off easily-black mostly), corrosion resistance (I think all titanium alloy guides are bullet-proof, but not all stainless guides), tangle-resistant geometries, foot design, weight, and customer support and information (guide heights, weights, responsive to questions, help in deciding options), specific designs for specific needs (like Fuji KB's with big feet for high stress areas of the blank, KT's with smaller lighter foot for the tip section, for example) , and value (good balance of price and performance, however you define it). Also, a variety of finishes for aesthetics and function.