No the PS3 unfortunately does not have support for BRAVIA Sync (CEC)
As for the PS3 being a better BD player?
Depends really on your budget and how concerned you are about HD sound, the PS3 is an awesome piece of kit and is a very capable player for the money, but it does not fit in a hifi stack too well, and has a lot more fan noise than a dedicated player. Also it is worth noting that some of the dedicated players have direct outputs so can be used with older AV recievers.