I see what you mean, the results are all over the place and what looks like direct replacements may not ship to the US if you could even afford it. I know it's weird to say this, but you will need to call the manufacturer of the cabinets, if you know the brand of cabinet, or if not you should contact the drawer slide manufacturer and ask them to help you find a replacement, you'll want to ask for contact information for their closest distributer to you. For special order hardware is a bear, have patience and sometimes you just have to call around and find the closest contractor (like a casework shop) that carries the brand. Sometimes "closest" can be on the opposite side of the country.
To give yourself a head start in talking with them, go to their website, use the drop down for products, click on the the magic-move (i think but could be d-motion), and then scroll down until you see the web view option to view their catalog. See if you can find your specific product in there or in one of the other product line's catalogs. (sorry, but you'll have to do the legwork here).
If you've got the patience, you can pull the top and bottom sections of the slide apart, and hammer it back close enough to it's original shape. If you're picture is a good representation, it doens't look very bent. You might try clamping it to a block of wood with the bent section hanging off bit by bit and work your way gently tapping it back into relative position.
Your last best bet is to take your slides around locally and compare to other brands of slides... you'll want to look for something that will hold the drawer in the same position. You are not likely to find a slide you can mix and match with the existing closers. This is more about finding something that you can mount in place of the existing hardware and have the cabinet fronts not look like something is off.
