LEDs vs Metal halides.

[chevyjaxon]

I still cannot figure out how light emitting diodes (leds) can light up a tank as good as halides.
the Leds for reefs are they any different than the ones that you get in a flashlight? technology is great but it seems im always one step behind everyone else. ive moved from halides to T5s although cheaper to run still not as shimmering as Leds or halides. thoughts on Leds? halides? t5s? is one really much better than the other?