Yes and no on that 1 GHz thing.
Think of it like horsepower on a car - there's more than just one factor that goes into performance and no one number tells the whole story.
The Hummingbird (and the Droid X's OMAP3) are made from a semiconductor manufacturing technique called a 45 nm process whereas the Snapdragons in our EVOs is made from a 65 nm process.
The smaller devices _can_ run more efficiently - where efficiency can be a bit a speed or less power consumption or a bit of both due to the physical layout of the devices within the processor.
The advantages or disadvantages of the Snapdragon, the OMAP3 and the Hummingbird are not as straightforward as most reviewers would have you believe. I make no exaggeration whatsoever when I tell you that the massively overwhelming group of reviewers discussing this subject are a bunch of moronic parrots spouting off pure fiction.
My favorite is their common attribution of one particular graphics metric that is in flat disagreement with Samsung's datasheet for the Hummingbird - and they will never retract or recant.
Reviewers' business is to create controversy and stir up fanboys - they make money by webhits and a simple review of what's really what tends to not have enough sizzle.
Here's a link to a benchmark graph showing the EVO setting a performance record using highly customized software. The colored graph (explanation on those a post or two later) pretty closes the case on the myth that the Snapdragon is a dog and that Brand Z is your must-have processor. (In fact, the whole thread might interest you.)
http://androidforums.com/all-things-root-evo-4g/141489-fast-evo-2-2-custom-kernel.html#post1374353
I've personally taken to calling any phone with the newer 1GHz processors running Android superphones rather than smartphones.
There's so much latent processing horsepower under the hood that present software is not exploiting it's not even close to funny.
It's for that reason alone that the reviewers' remarks are proven stoopid - how could they possibly make such claims when only the elite few have any idea whatsoever what these various processors are truly capable of?
Hope this helps.
PS - Waiting on Epic for WifelyMon, strictly for the keyboard she wants.
Keeping an eye on Samsung's response to the GPS complaint in the Galaxy-class phones - nothing's perfect, but hey, HTC and Samsung (and Sprint!!!) - could we update just a wee more often? Just 'cuz you guys think we're happy 'cuz we pay our bills doesn't mean we're always happy as clams with what's being served.