Not really comparable, WAT-LON had been on a downward trajectory anyway. The fatal mistake was shifting it to SEN long before the new terminal and railway station were up and running, the bus transfer to Rochford station unsurprisingly wasn't popular and people didn't go back. If LTN (or STN) was the answer it would have been shifted back and the fact it wasn't speaks volumes. Also I understand the more recent WAT-LTN effort by VLM wasn't exactly packed to the rafters.