1xpally,2xmage,1xlock,1xpriest vs 1xpally, 4xele shammy

I've been 5 boxing for some time now using a mixed class group, 1xpally, 2xfire mage, 1x aff lock and a holy priest. They're all 70 now with ok gear, I've always had trouble in instances, the micro management is crazy and I only seemed to do well when I was overgeared for an instance which isn't a great way to play, it's frustrating and I lost my wow mojo. So at the beginning of the RAF I rolled 4 shaman and last night got them to 62, they're wearing hellfire and zangamarsh quest blues and greens with around 340 spell damage on each. I decided to see how they'd perform in ramps, so I dusted off my 70 pally and went to hellfire with the shammies with some trepidation.....I just cannot believe how incredible this team is. I was carving through trash like a hot knife through butter. The pally wasn't even really doing anything half the time, he didn't need to. Just pull the mobs and shammies burned them down, when I got to the first boss (in the fastest time I've ever got there btw) I just burned him down too. It's almost too easy, it's like playing wolfenstien in god mode. So, if your thinking of putting a mixed class group together and like me you're not the greatest player :) then don't, just roll a pally and some shammies.