Honestly I'm not the one to call this, but I feel as if this is getting slightly off topic, maybe a new thread should be started for comparisons of picture styles.
On top of that, I guess what's valuable, at least in this thread, is how the picture styles are made, not how they compare visually. It would be valuable if there were two very visually similar picture styles but one did something worse (had bad banding or something) and that was a result of how the picture style is put together under the hood.
In terms of comparing picture styles, I'm just assuming here that you're going to take a photo in each picture style. Even if all settings are kept the same I don't think this is the best or easiest way to go about it. All you'd need to do is take one photo in RAW and then put it into canons DPP software (digital photo professional) and apply the different picture styles.
In saying that it's still a visual comparison (which I guess what the photo looks like at the end of the day is what counts). A better process would be to generate a CR2 image that can fake itself as being taken with a canon that has linear gradients of 0% to 100% black to white and red green blue channels, feed this into DPP and see what the curves actually are, which would also allow finding the canon film curve, also the difference in colours between neutral faithful etc. In addition to faking these raw images to have them look as though they come from different canon models, which would allow to see if the curves do change between camera sensors (assuming this is all in the software, which I'm going to assume it is, if it exists in the first place).
I will actually make one of these CR2 images, hopefully this weekend, which it is the weekend already. Anybody who would like a copy it will only cost $12.99