Just the nature of LED"s, Wilco, not your aging eyes. I had a similar problem with the brake light on my sidecar. Rick (Motorrad Elektirik) sold me a bulb that was technically supposed to be brighter than the conventional one, but it was a really bright pinpoint. The regular bulb actually looked more visible because it lit up the entire red reflector.
Maybe in the future they'll figure out a way for the LEDs to be a direct drop in and look the same as conventional but for now I think we have to experiment. Getting better though....