What data is used to show cystectomy is superior to concurrent chemoradiation for muscle invasive bladder cancer?

In the absence of valid randomized clinical trials, Stein et al., PMID 11157016 1000+ Rad Cystectomy is often considered the benchmark article for Urologists when addressing this question. The paper is from the pre-adjuvant chemo era so some will say the survival is actually 5 to 10% higher than rep...