iPhone, Android, BB: All can send emails. You can argue whether the physical keyboard is better etc. but that's personal preference.
iPhone, Android, BB: All can sync contacts. Not sure why one is better than the other.
iPhone, Android(never used it but I believe?), BB: Can work with Exchange if you use that, calendars seamlessly sync between devices, computers, etc.
All I have ever heard is BB is "better" at it, but no one says *why*.
I bought 2 of the 60w equivalents and they look pretty good. I'm not a fan of the bluish ones, but the yellowish ones looks great. I like that they rate it to a comparable incandescent. Most LEDs seem to give you a lumens output value but for most people, that requires some research into what that is in equivalent incandescent bulb.
It seems like they're just acting like an affiliate that recommends music based on tweets?