How are those 12E tight Richmaguni? Width or length? These are 3E so they should be slightly wider than the E. Of course these are going to be longer too at 12.5.
I bought these because I needed an emergency pair of black dress shoes. Just slapped an insole in them, but they were still a bit too long to want to wear often. For reference, I have a pair of 12D AE Drydens that are snug in the toe box.