Become one you have no idea wtf you are missing!!!
What makes you think he hasn't tried it? I have, and I'm still not a fan. Sure there are great things about it, such as the convenience of creating an Electronic Circuit or even a Low Voltage Solar Array with a single click, but I'm still not a fan.
I have a small AE system, well not that small actually, I have 4 16K drives although only one of them is full, and an autocrafter with two providers and two CPUs, and a line of about 5 or 6 machines to pulverize, smelt, centrifuge, and carpenter Pulsating Meshes into Ender Pearls. But I don't feel the need to expand it beyond that. I have no desire to replace my main sorting system and my storage chests and barrels with AE, I only throw in enough resources to do the autocrafting that AE does for me, and to be honest about half of the patterns in the pattern provider are for upgrading my AE system. The only other thing it does for me is to turn on my skeleton spawner when it's running low on bonemeal.
Oddly enough, this happens with most other kinds of sorting systems too. Most RP2 sorting systems look like other RP2 sorting systems. Most BC sorting systems look like other BC sorting systems.
There at least three major choices with RedPower:
1. Do you sort everything, with default routes for unhandled items? I don't, most people do.
2. Do you pass ores to be processed and then smelted automatically, or do you route the dusts back to the input to be handled in a separate pass? I do the latter.
3. Do you send stuff to individual chests, or do you have barrel walls filled by routers?
You can have separate ME Chests with AE rather than just using the terminal. DW20 did that, but ended up not ever using the chests.
On top of that, there's other stuff you can do. Have you ever seen this done before, and can you guess how it works?
1. I throw something into my Ender Pouch
2. I select a Wireless Remote frequency, "Macerate", "Furnace", or "Recycle" and press the button.
3. Any items that match the item in Slot 1 of the pouch disappear, and gradually trickle back in in their processed form (dusts, ingots, sand, glass, bonemeal, scrap, whatever).
So lets say I'm away somewhere, perhaps in a different age or the Twilight Forest, and I need some glass. I just dig up some cobblestone, pouch it, select Macerate, wait a few seconds for some sand to appear, then select Furnace, and I've got glass within a minute of wanting it. Then I just need to keep making sure the sand is in slot 1 as I send it to the furnaces.
Can you do that with AE? Maybe. I'll believe it's possible. Not sure how though. I can think of two very different ways to do that with RedPower, although getting it to only process materials that match Slot 1 is the hard part, but that's an advanced feature that I added quite a bit after implementing the main remote processing capability.
I've been called a fanboy, I've been called a palladin, and that's all fair enough. I do love RedPower, because it's awesome. Oh, and when I throw a bucket into my sorting pouch, it reappears 30 seconds later filled with water. Lets see AE do that with one EnderPouch.