i noticed exactly the same, have a old P2B with 1.46 (Powerleap) Celeron. If you even look the fastest 2.66 P4 (Northwood,133fsb), your values are only 25% lower - extremly impressive.
it's faster than my 1.8 northwood unclocked; could not believe it bought new pc - p4board, stronger power etc...- but was not needed actually.
it was all marketing to sell the p4, the tualatin is extremly fast. Did you read the news they wanna claim Intel for slow P4's? Seeing those values....