Carnitine helps transport fatty acids across the mitochondrial membrane and into the mitochondria for burning, to create energy, and T2 does this also. But in addition, T2 also increases the rate of fatty acid oxidation (burning) in mitochondria.
But in particular I think it will be mostly covered (e.g. malonyl-coa) by the caffeine+choline+carnitine combo (you'll have to dig out the studies): http://suppversity.blogspot.com/2013/02/forgotten-dieting-aids-choline.html
plus AMPK activators which is covered by a large number of substances in use by sufferers.
There are so many other combinations with carnitine people are using (unknowingly), since it's so popular, that a few of them must already cover the whole pathway. e.g. People are unknowingly doing the caffeine+choline+carnitine combo.
So it's my opinion that the T2 is not novel, not that it can't be useful.