Hmmm, my iPhone does Exchange with Google just fine. I believe it's an ongoing myth that no other cell phone can handle email like the Blackberry. Btw, does it cost extra to set up Blackberry mail to push to your Blackberry? When I had mine, it was an extra fee every month to have your email pushed to it.
No, it doesn't cost extra to have email pushed to Blackberry. What I've personally found is that even though I have Exchange w/ Google push set up as well as a Yahoo push account, the iPhone is inconsistent. Sometimes, the email gets pushed pretty fast to the iPhone, and sometimes it takes me having to open up the mail app before it registers emails coming in. Also, when you open the email account, it has to connect to the server to see any emails that you have in the folders. It seems as if there's no data connection, you won't be able to see anything, unlike the Blackberry where everything is sorta instant, and on the device already.
Also, with the Blackberry, all emails, regardless of what account it is (ie. Yahoo, Gmail, hotmail, aol, etc.), are instantly pushed to one unified Inbox, and I find that really efficient because you don't have to cycle from account to account to see what's in there, because it all goes into one Inbox in the Blackberry where you can quickly look at an email and reply to it from the account it came into. It's just faster. I'm not trying to bash the iPhone, it is really just my personal experience. I have both the iPhone and a Curve 8900, and the Blackberry is much more reliable when it comes to email and it is faster at it too. They have this part down.