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Comparing Googled numbers the Fusion is only about 500 lbs lighter than the SHO and the SHO has 40 more HP. By "rule of thumb" bench racing they should be roughly the same and they are close. You still have to remember that peak power isn't everything. I'm willing to bet the extra 0.8L of displacement has an effect on overall torque in the system to give an edge to the SHO.I guess the question is why is the Sport not able to keep up. You would think with similar power and less weight than the SHO, it would have a fighting chance. Is the factory tune even more conservative past 6o mph? Or is it a "tester's error" in this case, causing an invalid comparison? I assume the 6F55 is common to both. Haven't found a reliable gearing info sheet for the Fusion yet.
With the sport label, it should be in the low-mid 90s. Oh well.