In a word, no. The web of trust is much easier to subvert - partly because you then have a non-uniform level of verification (see Martin Krafft) and partly because the number of checks you need to perform slows things down.
But what you're probably thinking of is just having multiple CAs able to sign a single SSL certificate. I think this would probably give a lot better assurance in the short term.
One thing that might be interesting would be an academic survey of which CAs are signing which SSL certificates. See if there are patterns that might indicate a level of trust or distrust that isn't publicly stated.