Your pre-cat O2 sensors are good. Bank 1 sensor 1 varies between 0.06 and 0.86. Bank 2 sensor 1 varies between 0.05 and 0.855. On my PCM strategy if the PCM determines one bank sensor is bad it will utilize the one good sensor for both banks. It is obvious when this happens since the STFTs for both banks will always be identical. The PCM primarily uses the MAF sensor airflow to calculate load. For your data log the load seems to be proportional to the MAF sensor reading. In general the MAF sensor reading increases and decreases with engine speed and with TPS voltage. I think the significant issue is that both bank LTFTs slowly change but increase significantly with load but the STFTs rapidly change a small amount. This puzzles me. I'm considering there may be a sensor wiring error. I suggest that you disconnect the sensor connector that is easiest to access. The PCM should detect a sensor heater voltage error and set the corresponding DTC. Read the code and see if it corresponds to the sensor that was disconnected. Remember that bank 1 is the bank that contains cylinder 1 (engine front/passenger side in USA). Sensor 12 is the bank 1 post-cat sensor and sensor 21 is the bank 2 pre-cat sensor.