I still say the Shearer/Sniper comparison is ignorant. One pipe has been in testing for a year while the other has been in testing for many years, in many different motors, in many different parts of the world and in many different variations.
I think you would be doing a lot better to compare Snipers to the original Rockets or R2's. They both got the same kind of hate when they came out for no reason other than it was a new pipe. You rarely see a used set for sale. There's two reasons for that. First, the people who run them like them a lot. Second, the quantities aren't out in the real world like CPI or Shearer.
I would like to see comparisons for them all, but in order to do that fairly, they would have to all be tested on the same motors in the same day on the same dyno. For example, try all the pipes on a stock port motor. The next day a ported motor. The next day try them on a 4mm Cub. The next day try them on a 10mm Cub. That is the only way you could even possibly begin to compare them. Any motor can be set up to react better with a certain pipe. That's why they would have to be tested on the same set ups.