Conclusion:
Both substantially brighter and noticeably whiter (unexpected, probably due to aged bulbs - headlight housings are very clear and clean after being polished recently).

Basic comparison of before and after:


Other angle:



No lights:


OEM 9006 Stanley Bulbs (probably came with the car):


Driver side 9006 ---------------Passenger side 9011:


9011 bulbs on both sides:



And now from a different angle ...

OEM 9006 Stanley Bulbs (probably came with the car):


Driver side 9006 ---------------Passenger side 9011:


9011 bulbs on both sides: