It's a shame that most of the LR tests are done wide open only, since the tests are so good there. Let's face it. For the most part, people don't shoot 16-35 IS, 11-24, 14-24, etc. at wide open, but more likely f/5.6-f/11, so I'd love to see the lenses tested at say f/7.1 (enough to avoid too much diffraction but also to get more of a sense of landscape shot performance). (and when you do shoot f/4 and faster and especially f/2.8 and faster, wide open, you are not as often caring about the edges corners as when stopped down a bit)
True, they will likely be closer at f7/8. But obviously the 11-24 is going to be bad-ass whatever, and likely better than the 16-35 f4 for instance.
It depends though. Its a myth that they all do the same at more typical landscape apertures. The 24 1.4 Mark I vs. Mark II vs 24-105 vs 24-70 II vs 24 T&S vs 24 T&S II etc. show a LOT of differences at landscape apertures. That's why it's too bad LR mostly tests stuff at wide open.