Why is it when these guys, or other review sites for different products, always start out by saying something like...

"It is important to note that this is not a review or a comprehensive analysis, as we only had a few hours to look at the unit in operation, but we were happy with what we saw."

Why do a write up on something when you only have a few hours to look at it. Why even send them a unit if they are only going to give it a few hours.