US GT MC vs. Sport

I am new to Maserati coming from Ferrari. I am about to purchase one but had a question comparing the us version of MC to sport. The only difference I see is the external features plus less 10 bhp for MC.
Why is MC $15-20K more?

 

I own an S model 2011 and have driven mc sport several times,
there is a somewhat palpable difference between the two. No big deal
if u like the ground effects buy it , the few extra ponies and trans shift time
makes almost no diff

 

MC sure looks hot though but. Bet you can add the carbon parts afterwards to your own taste.

 

I noticed MC has less Bhp than the sport

 

yes but u can hardly tell it needs more to be effective change,,,
having said that buy what u like if u like the ground effects than just buy it.
at that level u are talking about a 10% price difference (more or less)
if u want to save big buy a pre-owned save 30k mine is at the dealer
im trading it in for a ferrari

 

I found a 2013 sport for 111K and MC for 135K. i found a used MC('12) for 120k. I just love the MC's rear diffuser and the exhaust.