Looking at then bulbs in
Looking at then bulbs in question they should have produced the correct beam pattern for an H4 bulb in the prius headlight housings. The bulbs you chose are likely not a bright as claimed due to limited cooling. There is every few fins & the fan vents inside the housing. While the fan venting inside the headlight housings has a side benefit of potentially melting snow off the headlights the potentially major drawback could be vastly reduced bulb life if they were truly a bright as claimed. Higher claimed than real brightness is the norm for most LED headlights. The color temperature of the light contributes a lot to the impression of being much brighter than stock. The are brighter but not the full claimed brightness in most cases.
I agree with previous poster that if your are blinding other with your lights you need to aim them better and make sure that lenses are not clouded at all as this will scatter the light. If you don't do this then remove the LED lights because your are blinding others.
The toyota prius headlights respond well to using LEDs if proper aiming is done with a clear clean lense. In that condition they do not blind others.