cable pull / leverage MA is all about the pivot to work distances ,
If you put long arm V brake Calipers on the wheel, you need a long pull brake lever on the other end ..

Lower MA Cantilever brakes and short arm Mini V brakes can use a shorter pull Brake lever .


QBP 'travel agent' is a way to mix the 2, since it amplifies the cable pull, fitted onto your V brake instead of the noodle.