I've got both and the TC also has thicker wires and a bigger capacitor to help it deal with the extremely high current put through it by touring cars.
The competition is fine for anything offroad as far as I'm concerned, even down to 4,5 turn brushless, as long as you have the cooling openings cut out in your bodyshell.
But then you can always hook up a small fan later if you do have problems with heat.
Concerning the power profiles and other settings available, they are identical.
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