Tried so much, no chance of getting to this...

Just sounds like your typical Hardstyle lead, but in a higher Octave, fiddle around with the "Transpose" on the Ti and see what you can do, recreated a lot of Hardstyle leads that way.

Or you can get in touch with Bas or Arjen and ask them how they did it, which waveform's etc. I heard they're pretty down to earth and helpful guys.

You could probably get in touch with them via. Twitter private messaging. (EDIT: Turns out you can only PM someone who follow's you also, so maybe try Facebook?)

Hope this helps you, really like your work and would like to see what you could do with that lead

Edit: By the sounds of it they've modified this : http://www.youtube.com/watch?v=O9ii9HDr8-Y&ob=av3n, a bit, since that's higher quality it should give you a better idea, I hope.