Ok, screw it, decided to download the mega link above and investigate.
The .rar itself scans as clean by my AV
Unrar'd the file scans as clean.
Mounted the iso and checking within with
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Darksiders setup.exe -
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Scans as positive by heuristic detection by 6 of 68 reported antiviruses.
Within the installed folder -
COM3D2.exe -
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Scans as false positive by 1 of 71 reported antiviruses.
So yeah I can now say with some confidence the MEGA file is IDENTICAL to the torrent version (the iso in both have the same hash), and both are false positives.