Can't really do such comparisons.... we don't even know if the MTF are real or computer-generated.
From everything I've read, Zeiss, Hasselblad, (and maybe Leica and the other MF mfgs) are the only ones that use "real" MTF charts.
I'll be excited about this lens if it's as big a bargain as the 18-35 - i.e. less than the white box BigValueInc, etc. price of the Canon 24-105.
EOS 1D X, 5DIII, M + EF 24 f/1.4II, 50 f/1.2, 85 f/1.2II, 300 f/2.8 IS II || 16-35 f/4 IS, 24-70 f/2.8II, 70-200 f/2.8II || TS-E 17 f/4, 24 f/3.5II || M 22 f/2, M 11-22 f/4-5.6 IS | 18-55 f/3.5-5.6 IS || 1.4x III, 2x III
I only shoot at ISO 100 with perfect technique - should I get a Nikon?