Canon EF 2X III vs Kenko 2x PRO 300 AF DGX Comparison Shots.

I bought the Kenko here in Greece and when I went to the States a couple months ago I decided to also purchase the 2x III and EF 1.4 III, well I am puzzled to see the Kenko do so good against the Canon, here are test shots for some that wanted to see how well the Kenko did, all shot in RAW tripod and remote, the first set are at 70mm f5.6
Canon

Kenko

and the 100% crops
canon

kenko

canon

kenko

canon

kenko

I will post the 200mm next, also I won't post f8 or f11 because the results are the same as f5.6.