Some hybrids look like mountain bikes with 700c wheels, which confuses the matter more. Case in point the Specialized Crosstrail, and the Giant Roam for example. I agree there is something going on from the crash, and the bike was not thoroughly looked over. The only time I notice a complete lack of speed from a hybrid is too low tire pressure, brake or fenders rubbing(if equipped with fenders) or chain rubbing or not lubed. Being that the derailleur shows signs of damage, I would probably guess that the hanger is possibly bent? The front derailleur may have been moved out of position. Overall, your knees should not hurt. That s a sign of bike not properly set up for the rider. Saddle height, etc.,,,,BD
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So many bikes, so little dime.