the REAL reason, the Gen V are superior to earlier versions is that they are more reliable by design. Glock eliminated some known weak points.
The three most broken parts on Glocks were the trigger spring ( that S shape spring, especially breaking when assembled the wrong way ), the slide stop spring ( flat spring ) and the slide lock spring ( flat spring ).
The three corresponding springs on a Gen V are coil springs, and shouldn´t break.
Pls note that the G 42 and G 43 already have the improved springs, so technically they are "Gen V" from start of production; in fact, they are the first of the Gen V Glocks.