I've used both VP T4 and C12 in my dirt bikes. T4 is an unleaded, non ethanol, oxygenated fuel specifically for dirt bikes. C12 is a conventional leaded race fuel.
In the end, good old C12 is about impossible to beat when it comes to HP output and throttle response. Because it's a leaded fuel, it is a very, very well developed product that does not contain the compounds that reduce output and response. In other words, the lead boosts octane instead of high octane unleaded additives, like toluene, which tend to dull response and output.
T4 is one of the new class of unleaded, high octane, oxygenated, race fuels. works very well, but may require a slightly richer mixture. I don't like it quite as much as C12, but I do like it very much. Probably the best unleaded fuel I've ever used.
Not sure what year your Raptor 700 is, but I think the later ones use a cylinder head mounted O2 sensor. So, an unleaded fuel is necessary if you have an O2 sensor. Then, T4 would be a very good choice.