To me, 10X's better noise performance means when shooting RAW in the 3200-6400 range you only have to use half of the noise reduction of the canon. So say with the canon at ISO 3200 you need NR set at 35 in lightroom. but with the Fuji you only need NR set to 10 or 15.
The entire reason I want the fuji is because its a small travel camera with great IQ. I find myself not wanting to lug my big DSLRs around unless I'm getting paid to do so. this fuji gives me a fun and professional option.