I would think pressure cooking would overdo the corn. One point I took from Nero Wolfe was that "American housewives murder corn on the cob" or something along those lines, by boiling it for 10 minutes or more. I took note and usually only have it in the water long enough to get hot, probably 5 minutes.

My dogs love corn on the cob and my Labrador retriever is particularly adept at eating it off the ear row by row, human-style. The other dog it's a bit of a wrestling match to keep her from taking the entire cob to consume. Yes, it is possible to have leftover corn, and this is how I dispatch it. You should see those two gobble it down if there is butter on it. (Agreed about margarine, I haven't used it for years. I adopted friend's policy, who once pointed out that she didn't use much to spread, etc., so she might as well use butter. I also cook with it and have stopped using shortening. I use butter or oil instead.)