I'm not familiar with the brake system in your specific car, but for cars in general...

Brake pressure / power is not equal to all wheels. Rather 3/4 of the braking pressure goes to the front wheels and 1/4 to the rear wheels typically.

Then if you have an ABS system, those have electric valves and chambers which must be bled in a certain manner or there will be air trapped in those areas. That can cause excessive pedal travel. Consult a factory service manual for proper bleeding procedure of an ABS system.