It seems like are you are attempting to intentionally mislead him.
Well I hope I had clarified earlier, but just to be crystal clear, and since I love being on the friggin' defensive with the RP2 haters here; allow me to further clarify:
First off all, I don't claim to be an expert in any particular system.
Secondly, I don't know Eloraam, make any profit from, or have any reason to support RP2
Third, I wouldn't maliciously mislead someone, and I'm pissed off at the implication that I might, or that I'm not playing the same game, since OBVIOUSLY, BC has been 'greatly improved' since version 1.x.x; if I was in error (and for the record, I'm not convinced I was) don't jump to the conclusion that I'm either mean or stupid.
Fourth, I play SSP, with the Direwolf20 pack, so I may not be experiencing the same thing as you if you're SMPing it with a different pack for instance.
That all said, I appreciate the opportunity - it made me re-evaluate my opinion, and look at the facts.
My analysis:
The pipes themselves - Storage
There is one kind of RP2 pipe, and several BC pipes; once you add in the paints or covers you'll need to make the pipes tight like you can with alternating materials of BC pipes, it's basically even.
Speed
Once things actually enter the pipe/tube it's variable - RP2 tubes are one speed while BC pipes range from a bit faster (gold) to quite a bit slower (cobble). Magtubes from RP2 are very fast, but require blutricity wiring and a pair of accelerators.
Space
A relay or filter is just as much a pain in the ass as either wiring a gate or fitting a redstone engine/wood pipe combo in, so there is no real space advantage there; slight edge to BC since its easier to pop an autarchic gate or Redstone engine and forget about it.
Sorting
I really like diamond pipes for ease of setup - intuitive, clean, and fits damn near anywhere on the line - paired with iron pipes you can make some efficient set ups.
The filter has been my go-to inventory manipulator for RP2 - without 'programing' it pulls better than the one-item-at-a-time Transposer, and can fit with just it and some sort of redstone pulse - 2 blocks in space if you're willing to use a timer (yes, I've heard the timer causes lag) or some sort of wire. There are progressively more complicated setups you can use with RP2, and they aren't as easy, or compact as chains of diamond (and now emerald) pipes can be.