Well, I was also looking at the wings, the sweep of the vf-5000's wings remind me of the mig's (more so than the f-22 which has pretty unique diamond shaped wings) and the raised engine nacelles superficially resemble the exaggerated leading edge of the tail fins of the mig.
I'm not emotionally attached to this theory and the f-22 theory looks good, I just thought I'd further elaborate the vague similarities I saw.