What do you mean by "better" exactly? Are you shooting in JPG or RAW? If you're shooting JPG are you *SURE* the in-camera settings for both cameras are exactly the same? Also, are you shooting both camera's with the same lens(es), etc.?
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Hi yes I am shooting in jpg with the same Lens but it could be the settings but after just finding this I am not too sure
[h=3]Advantages of the Nikon D40X[/h]
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Better color depth
22.4 bits vs
20.4 bits
Distinguishes 2 more bits of color
Much larger screen
6.4cm vs
4.6cm
Around 40% larger screen
Significantly better image quality
63.0 vs
50.0
Around 30% better image quality
More dynamic range
11.4 EV vs
10.3 EV
2.2 f-stops more dynamic range
Higher resolution screen
230k dots vs
130k dots
Around 80% higher resolution screen
Significantly smaller
124×94×64 mm vs
140×111×78 mm
Around 40% smaller
Larger viewfinder
0.53x vs
0.49x
More than 10% larger viewfinder
Much thinner
6.4cm vs
7.8cm
Around 20% thinner
Higher true resolution
10 MP vs
6 MP
Capture around 70% more detail in your photos
Lighter
522 g vs
679 g
More than 20% lighter
This
is the comparison between the D40X and the D70