As it already been pointed out just becuase you can rail in CTF or CA doesn't mean you'll dominate in iCTF as it plays a lot faster
Back in Q3 when c9 (arguably the best team of all time) was winning everything they tried their hand at iCTF and while they enjoyed some success they also gotten embarrassed a few times and we far from being the same team.
The question you're trying to ask is who the best railer in QL is and thats very different from who the best Insta player is.
It was my friend cheating.
the only thing worse than iCTF is CA.
If you want them let me know and I'll be happy to upload them.