Ok I didn't read threw it all because it was mostly nothing...
I'll give my opinion.
In drag racing it all comes down to displacement, and so the supra wins there. I think 1600 hp is possibly believable but I doubt it, there has to be A LOT of r&d into that, which means custom machining will expensive milling machines. So I don't really believe it has 1600. 600-900 hp is believable because supras are dyno queens, and if you can afford one, your most likely to afford modding the shit out of it too.
In handling I'de say the 240's, but with tons of money into suspensions like the JTGC those supras are pretty good because all it really takes is suspensions.
A supra versus a 600cc sportbike on the high way would be pretty close. Supras have a crazy highend power, the 600cc bike would probably be too scared to go past 160 miles. But where can you go that fast these days.
Toyota built themselves a nice muscle car, it handles like one too. I know all this because my cousin has one, fine machines and you grab sooooooo much attention it gets annoying.
Skyline versus Supra would be a nice match, but in drag racing titan motorsports street tire class supra is ripping everyone, I think they past 9 on street tires.
DSM are ripping it up too...
Never pass up the chance for a supra lol.