This Device Supports RGB Component. The amiga has 3 Component Wires plus a Sync wire. I believe this device will sync on one of the 3 (Green) I believe.
Jim S is absolutly correct. Component Video is not RGB. Even though the component video cables are colored Red Green and Blue, they are NOT RGB values. They are Y-Cr-Cb (or YUV or Y-Pr-Pb - whichever you prefer to call it). I can guarantee that Component Video is certainly not the same as Sync-on-Green RGB!
You could build a circuit to convert it, though. There are plans on-line. I've been tempted to loop by the local electronics store and pick up the parts to build one. Shouldn't be more than few bucks worth of resistors and gates, along with a few RCA jacks and a case. But so far, I've been too lazy to try it, myself, so I can't tell you what you'd expect from the output quality.