indyank - 2:02 pm on Aug 4, 2011 (gmt 0)
I would say that there isn't any specific advantage in using WP. In fact, WP has some issue with URLs (permalinks) and you can access the same content using two or more URLs. Moreover, google can easily detect the underlying platform when it is WP and this will be a disadvantage if at all google decides to downgrade certain platforms.
The big advantage with bespoke product is yours will be a unique site and since google tends to apply certain algorithms by observing similarities, a platform like WP will be more a disadvantage.