with 378 gear the fights are really a lot easier.

I spent 3+ hours on all three new heroics last night and was able to clear them all with the traditional 1PAL+4Shaman setup but I was in mostly 378 gear am I am certain that the fights would be different with I was at a lower gear level since a couple of fights I just barely survived. I would suggest to stock up on justice points and get geared first if you prefer a smoother run. =)