Sal either had to purposely sabatoge the video, or he made a mistake. I won't speculate any further
I'll try to explain as simple as I can
BB (on BES)
Instant push from exchange server.
If admin allows other mail accts, only the account from your provider is instant. The RIM server polls the mail server for pop accounts every 18 minutes. If it gets a new message, it polls every 2 minutes for 10 minutes until it gets no new messages, then back to 18 minute intervals. As soon as the RIM server gets new mail for you, it forwards the mail to your device.
BB (on BIS)
Instant push from your carrier blackberry.net account.
Instant push from gmail.
Instant push from Hotmail.
Instant push from RIM server, but as above RIM only polls your pop account every 18 minutes unless it sees a new mail.
Android
Instant push via exchange.
Instant push from gmail.
Gmail polls your pop accounts the same way RIM does. IIRC gmail polls every 16 minutes vs 18 for RIM, but very little difference.
You also have the option to allow your device to poll your pop accounts every x minutes.
On a BB, you log into your carrier BIS page and add your pop email accounts to RIM's server.
On an Android device you can log into gmail and add your pop accounts to google's server.
On a BB you can set filters, return address, flags, etc on your carrier's BIS page.
On Android you can set filters, return address, flags, etc on your gmail page.
On a BB your mail comes from RIM and goes into it's own folder on your device.
On Android your mail comes from Google into your inbox with color coded labels for each account.
On a BB you are forced to either use BES ($$) or push your mail through RIM's private servers.
On Android you can use active sync (free), push your mail through Google's private servers, or pull your mail using your mail app without going through Google.
In short, for the average user on BIS Android's mail is more flexible and can be made more secure than BB. You can opt for the same "instant push" BB user's tend to go on about, or you can configure your mail client to directly connect to your pop server and keep sensitive data away from a third party. The latter WILL come at a cost of battery performance, but it can be set to be very minimal. One company I contract for does not allow their communications to pass through 3rd party servers, and I had a nightmare everytime one of my employees had to communicate with them. Emails came to me and I had to forward to the correct party for every message, and do the reverse for replies. This is not the norm however.
BES does offer encryption.
BES does allow the admin to keep the user's device from directly connecting to the exchange server.
BES allows the admin to control exactly what email goes to the user and what does not.
BES is a huge expense, and requires a well trained employee to administer.
Please - understand that I am trying to simplify this. This is the basic process, and does apply very well to BIS users on BB. I've migrated 14 users including myself from RIM devices to Android devices in the past week, and have ZERO complaints about email. My users are also happy, as they can get their pop mail on the device using the VERY simple set up on gmail, vs having me do it for them using carrier BIS. They do have the burden of responsibility that they can f*ck up their company mail on their own, but I don't hire the average idi*t, and expect them to respect company property.
Hope this clears up some of the typical misinformation getting tossed around.