Dhrystone speed dmd vs gdc

[downs]

I just ran the samples/dhry.d compiled with DMD 1.007 vs GDC .23 svn on gcc 4.1.1 using MinGW, on a Pentium M with 1.6g.
The used flags were -O -release -inline for DMD and -ffast-math -O3 -frelease -finline-functions for GDC.
The observed VAX MIPS ratings were 3280 for GDC, but only 2570 for DMD.
(Note that the GDC rating could be increased to 3480 by adding -msse -mfpmath=sse,387, but that is somewhat risky).
All tests were run with realtime priority.
Do you think this difference in a synthetic benchmark translates into an actual speed difference for real-world applications?
Did I miss any DMD compiler flags?
Greetings   --downs