Advantage: The TRIFECTA Elite Powertrain Recalibration with Individualization (Custom Profiling) for the MY2011-MY2015 Chevrolet Sonic 1.4T includes calibration individualization, remote diagnostics, and comprehensive aftermarket hardware software integration support. (includes a TRIFECTA flash loader)
Advantage+: The TRIFECTA Advantage Plus (Advantage+) Powertrain Recalibration with Diagnostic Datalogging for the MY2011-MY2015 Chevrolet Cruze 1.4T includes Diagnostic Datalogging and aftermarket hardware support (includes a TRIFECTA flash loader)
Elite: The TRIFECTA Elite Powertrain Recalibration with Individualization (Custom Profiling) for the MY2011-MY2015 Chevrolet Sonic 1.4T includes calibration individualization, remote diagnostics, and comprehensive aftermarket hardware software integration support. (includes a TRIFECTA flash loader)
Those are the main differences from what I can see.