Literally all available evidence directly contradicts you. There is not a single iPhone generation in which larger iPhones outsold smaller iPhones of comparable capabilities.

As was clearly, painstaking explained to you already, using easy-to-understand language, the 4.7" iPhones outsold the 5.5" iPhones. And today 6.1" iPhones outsell the 6.7" iPhones. Every single time, without fail, smaller iPhones have outsold and continue to outsell larger iPhones of similar capability. This is an objective and indisputable fact.