Zafuuru

Like someone else had pointed out before, stuff like the macerator(and extractor), may double things, but only to meet the demands of the mod. EE is really no different, most of the recipes are very expensive if you try making them through normal methods. Without things like energy collectors, most of the EE recipes would take forever to create, on top of the fact that you'd pretty much need to strip the server bare of all its resources, just to craft them, which would definitely have a negative impact on the server. You should also keep in mind, many of the mods in the technic/tekkit pack have parts which can be easily exploited for little or nothing past the initial building costs, not to mention a few which could be considered just plain overpowered by themselves. Coal Coke Oven - Despite taking a while to gather the resources to construct a few, its very inexpensive to make(sand and clay bricks), and once you've got a couple running, you can double your coals effectiveness with no cost(other then time) to you(not to mention make charcoal). If you want to exploit ICs macerator, all you'd need to do is build a generator and macerator, and youve doubled your ingot production without having to build ICs more expensive EU generation machines(solar panels, water mill, wind mill, or nuclear reactor). Redstone Engine - I know its weak, but they are pretty inexpensive to make, and have pretty much no cost to run. Hookup enough of these with conductive pipes, and you can run pretty much any buildcraft machine(or forestry) with no real cost to you. Gem Tools(ruby, sapphire, emerald) - Part of redpowered, and as far as i know, it serves no real purpose for its mod, other than to make mining easier with easy to find resources which are only slightly less effective then diamond tools. When i play Technic, i only make one iron pick(all game), to mine my first few gems, and then never use iron tools again, cause there is no point, gem tools are more effective, and easy enough to find(if there had simply been only one gem type, it would be rarer, and less overpowered). Ontop of that, i only make one diamond pick all game, cause all i need it for is to mine obsidian, once i have enough, i never have to use a diamond pick again, because its simply cheaper to use gem tools. The Gem tools essentially make IC, BC, and EE easier because you don't waste diamonds and other resources to make tools from. The World Anchor/Dimensional Anchor - I was quite surprised to find that despite it being mentioned a couple of times in this thread, no one has actually said that the world/dimensional Anchor is overpowered. It can be used to run many things(IC, BC, EE, RP, forestry) while your not around, weather that be offline, or off gathering resources far in the distance. Without them, most of the things that are being complained about would be significant diminished problems. You wouldn't be able to run stuff like Solar panels, Quarries, Energy collectors all night while you were offline, and reap all the benefits. These are just the first few i could think of off the top of my head, i know there are more. As several people have said before, you can always disable it for your server(or play a server that already has it disabled), play technic and not use it(or disable it), or better yet, just play vanilla minecraft if your that worried about things being overpowered.

I really have to agree with vitorsly. I don't play tekkit, so i have no idea if this has been implemented in it yet(it has in technic), but a few of the recipes have been changed in technic(probably to combat the claims that EE is overpowered). Red matter, which used to cost 1 dark matter and 8 Aeternalis Fuel, now costs 3 dark matter and 6 Aeternalis fuel(466,000 emc), that's nearly triple what it previous cost. Also the Quantum Armor has alot of special effects which the red matter armor(full set costs around 8.6 million EMC) simply doesnt have that. The gem armor(upgraded red matter armor) requires fully charged Omega Klein stars, Omega Klien Stars alone take forever to make(costing 25,165,824 emc), let alone charge. The full set comes out to 317,397,830 emc, i could make a full set of quantum armor in probably a third of the time it would take for a gem armor set. Is EE powerful and convenient, yeah, is it overpowered, any more so then industrial craft? Debatable, but I'm gonna say not really.