While I agree with you on parallel pockets, this is not the case with this table. It’s tough. They are 4 degrees from being parallel at 139. If you brush the rail on the way in with anything other than pocket speed it isn’t dropping.Face angle is more important than pocket size in determining difficulty of the table imo. I.e. The pictured pocket's (corner) are almost approaching parallel which would make them play far easier than even a much larger pocket opening but w/greater Face angle. It's a fine balance with multiple factors contributing besides just opening size.
When you tighten a pocket past 4.5” you cannot keep the same pocket angle. If you do, it will not play properly resulting in cleanly hit balls down the rail to rattle. If these pockets (4.125”) were cut at 141-142 degrees the table wouldn’t play like it should.