The 50mm/1.4 is quite flat with chromatic aberration at wide open. The f/2 Makro is better at wide open. However, if you stop the 1.4 down to 2.0, it does help clean up the chromatic aberration and softness.
The 50 makro is a better lens, but I don't know that it's worth double. I thought about selling my 1.4 and getting the 2.0 Makro, but ... in the end, I don't know, the 50/1.4 is a great lens on its own and it's nice to have that extra stop of sensitivity if you really really need it.
the focus ring is designed to mainly focus on close things. so it gives most of it's focus throw/draw to the sub 1 meter range.
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The word "Makro" ought to be a clue to it's intended purpose. It's a stills lens designed for photographing things in close-up ("macro" technically starts at 1:1), not a cine lens designed for photographing people at "usual" distances. Optically the quallity needed for close-ups will carry over into normal photographic distances but the mechanics will naturally be optimised for its intended purpose.
Dave
Here are two in depth reviews of the lens you are thinking of, they are on a Nikon but that should not change that much on a Canon, at least this will give you more info