Certainly I look at the 12233 crops, but make sure you also read the texts.
I'm not sure how Bryan does his tests, if it's one centre-focussed shot and that's it, or if he focus-brackets and picks the best for each of the 3 crops. Things like field-curvature don't show up in the crops: using the first method it just shows as blurry even though the lens could be sharp on the edge, but closer to the lens; using the second method you get to see the the lens is indeed sharp on the edges, but you may not realise that it's not all in a plane.

Looking at real-life tests in another good thing, the more the better, but as long as you can see it at 100%, you can see the details for the shot (mm, f/, iso, camera, etc). Anyone can make a photo look good at 400x600 pixels, it's the differences in the large-prints that differentiate the good lenses from the rest...