When you see the M3W and Super 3 together you really notice how much wider the Super 3 is. Certainly looks better from the front than the back, even without a V-Twin, the back looks very unfinished with the number plate hanging in the air.
I completely agree on the size comparison. Having seen the Super 3 in person, I could tell it was bigger, but a direct visual comparison really underscores this point. It simply looks so much wider; short and squat in its stance.
I do think the center running/fog lamps really help the appearance of the grill and fill that visual void.