I own both 32gb 3G iPad and a 10v dual booting OSX and Win7
I bought my 10v knowing that I would be buying an iPad also.
In terms of quick browsing / email / games / movies / and most importantly battery life the iPad wins for me hands down... however my work role dictates that I need an Ethernet port for router / firewall configuration in an emergency so I have to own both.
Depending on what you want to do and what sort of user you are, you may be able to get away with just owning an iPad, however... sometimes there is just no alternative to booting into a real OS to get some work done (if your job dictates it)
As others have said though, its not a fair comparison because they're different devices with different strengths and weaknesses.