Review from CNET UK:
http://reviews.cnet.co.uk/mobile-phones/google-nexus-4-review-50009629/
Not a very thorough review, but it scored well in their benchmark test:
To see how it stacks up against the competition, I booted up my benchmark test and hit go. On the Geekbench test, it returned a frankly astonishing score of 1,975, putting it just below the powerhouse Galaxy Note 2 and far above the S3. It did similarly well on the CF-Bench test, where it managed to achieve 13,207, again well clear of the S3.
Clearly, the Nexus is a proper shirehorse and that's exactly what I found in my day-to-day testing. Swiping through the homescreens and loading menus was immediate and free of any lag, as was switching between running apps using the multi-tasking bar.
EDIT:
Can you imagine what the reviews would have been like if Google had shipped final software builds instead? Oh well.
A member at the XDA forums said it best:
"You're free to believe what you want, but a quad core Snapdragon Pro, running more slowly than its dual core sibling (which has also a lesser GPU), and slower than its IDENTICAL TWIN sold under another name (LG), doesn't sound right to me and makes me think that there were issues during the test (either of HW, SW or methodology nature)..."