The FAQ for the Amiga application Digital Almanac III states that the developer was asked to port this program to Windows but instead of doing this he just told PC users to get WinUAE or Amithlon! He then goes on to list the specs and requirements for the program, on Amiga at least a 68020 on PC at least a 500Mhz box. I hope this trend from developers continues. Whenever someone asks for a PC port of a popular Amiga application the developer recommends WinUAE and keeps coding for Amiga OS.
UAE might in fact become Philosophically like what AmigaDE is trying to push. Write once run anywhere but this time under the real Amiga OS!