If you can wear a 44mm PAM confidently, you'll be fine. The Ploprof wears a bit smaller across the face because the dial is much smaller than a PAM. All the size comes from the crown guard and the bezel lock. The thickness isn't as bad as you think, either. It's thicker than a PAM, but not as big of a difference than the measurements suggest. Figure it's about as thick from case bottom to outer crystal as the PAM is from the bottom-most point on the lugs to the outer crystal....maybe 1 or 2mm more. No big deal. Here's a comparison on my wrist...a bit bigger than yours at 6.75", but still on the smaller side:
As you can see, taking the CG's into account the Ploprof is only a bit bigger than the PAM across the face, and the PAM looks bigger on the wrist because of that comparatively huge dial. Really it comes down to the bezel lock part of the Ploprof that decides that it's only a bit bigger (visually at least) than the PAM.