I'm only a beginner photographer too so I really can't help you on all the technical gibberish. However, I took an art photography class that really helped train my eye with composition and aesthetics. From a purely aesthetics point of view, there are elements of each set that are good and bad for different reasons. If you can combine the two, you'll have a great shot.
The saturation, hues and tones in the second set B are better than set A. The color stands out a little better and looks to be more indicative of the actual color. Also there is a little more depth to it. Set B picture 1 nails it the best.
Also with set B the focus is better than set A. In set A, it is just a static picture and everything is in perfect focus. In set B, the car is in focus but as you move away from the car, you lose some focus. Comparing the pavement in the two pictures really highlights this. The dynamic focus of the set B really add some nice flair and touch to the shot.
However, the problem with the set B photos is that the white balance of the overall picture is imbalanced. Since you are parked near a bright bollard and have the headlights on, there is an excessive amount of "light" on the left side of the picture. Just think if you were actually in the picture, there would be too much light hitting the left side of your eye, and you'd want to squint or block your eye. The same effect can happen in your picture and the effect is it basically washes out the front of your car. I don't really look at it because I'm distracted by all the "light" (white) on that side of the picture. I would suggest turning the headlights off or relocating the lighting bollards elsewhere. But then again, when doing night shots, I prefer a single source of light anyway, but that's just personal preference. Set A doesn't have this problem because the lighting appears to be universal.
The other advantage Set A has is that the car is not centrally located in the picture. Do you know the rule of thirds, where you divide the picture up into the thirds both side to side and up and down. If you want an eye catching shot, shoot in one of the third off-center sections rather than square in the middle. Do you see how in set A the car is in the lower third, while in set B the car is in the middle? Shifting the car off-center improves the overall artistic qualities of the shoot, if that is what you are going for.
I think if you combine the advantages of both sets, you'll have a really spectacular shot. Another idea you may want to add/consider is to add a bit of flair to the shot as well. Catch it at a high or low angle. Turn the wheels full lock in one direction. Etc. Etc. However, overall, fantastic pictures! Keep up the great work and can't wait to see the next set of pictures you take.
