What's interesting is that in the big image on the EW cover they manage to go with the "traditional" costume while hiding the Speedo.
EW is owned by Time Warner. That in itself (along with crowding) may explain leaving Routh out.
Has any live-action version of Superman ever used the trademarked version of Supes' shield? Oddly, it looks like the Lois & Clark version may be closest.
I figured out that image is from the cover of Action Comics #419 in 1972. It's exactly the original were the red shorts could not be seen.
The Superboy costumes both actors in that series wore had the offical logo. Plus the suit Dean Cain wore in the L&C pilot. After that he had a similar one that was slightly modified.