To me, 'B' sounded more like a 'straight' arrangement, and I think it would be instantly recognized by untrained ears.
'A' sounded more like trying to alter/mellow the tune out a bit - either to make it more interesting, or to use it less obtrusively as background music or a background theme w/o 'hitting someone over the head' with the tune itself. It might not be so instantly recognizable to some.
I can't say one is better than the other, depends on how you want to use them. To me, 'A' is more interesting as it isn't quite as 'obvious'.
BTW - I went back and listened with my good headphones and external DAC/headphone amp hooked up to my laptop - 'A' seemed to have more 'hiss', and 'B' seemed a bit garbled/distorted (and noticeable in the reverb). Maybe those are just artifacts in the compression or you used slightly different recording settings for each? Either would be fine for a video, but I did notice and thought I'd mention it.