No, it's not side by side comparison, no identical subject, lighting, exposure or any settings. He just said Canon lenses, it can be 18-135 or even 70-200 f2.8 IS and no he doesn't have Canon 85 f1.4. Camera can be anything from 70D to 1DX MII. Didn't discuss much in detail. When he said that, it was something new to me. It's surprising to hear something like this after reading overwhelming amount of positive reviews of the lens.
Push in the sense increasing/decreasing exposure, contrast, saturation, highlights, shadows and all sorts of things. They predominantly using Photoshop for processing may be bit of Lightroom as well. He said it's more like working with the jpeg file than a RAW file.
I don't PP much and even when I do, I don't push things too much. I shot couple of shots with that lens and I find it's too sharp, in fact I wanted to soften it in post.