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DSLR RAW data is cleaned up significantly by camera firmware. Consequently, images appear better - that is intended. The down side is that DSLR data is not linear - short exposures might come close to linear - this can create calibration problems if not done with care and insight.
For a relatively inexpensive widefield setup, a QHY10 would do just nicely over a cooled DSLR, unless you hate using a laptop and enjoy the relatively less complex DSLR operation. For a number of reasond, I am very tempted to get over the laptop 'complex' and do just that.
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