All I did was Regenerate the Thumbnails, and now they’re all the same size. When you run that plugin you have to let it finish all the way to 100% before you close or navigate away from the page.
The images are more wide than they are vertical, so they’ll show up cut off on the end (that’s what WordPress does) rather than crunching the image to fit the thumbnail size….which would look distorted. I’m referring to the portfolio template.