I wouldn't exactly say that it will do that. But yes it has to be called the winner. Look at all the benchies in <A HREF="http://www.tomshardware.com/cpu/20030217/cpu_charts-22.html" target="_new"> this review </A> and you'll see that a Duron 900 and PIII800E are pretty equal. So Duron 1000 is quicker than PIII733. In something like winrar 3.1 though, the PIII800's blow out a duron 1300.
Now the important thing is PIII's will be running SDRAM (PC133). The durons in that review kept up to PIII running PC100 SDRAM. SO, imagine a duron with DDR on newer socket A mobo. Now, what you said is true. It would wipe the floor. So it is about equal on a KT133(yuck) and far better on a ddr newer system. Yeah, the Duron is better.
ABIT IS7, P4 2.6C, 512MB Corsair TwinX PC3200LL, Radeon 9800 Pro, Santa Cruz, TruePower 430watt