The Juno 60 definitely has a lot of those sounds that really represented the era. It sounds like a Juno 60, for which there is no substitute, and the people who love it LOVE it. It's a nostalgic sound and sounds great when applied well. It is not the craziest most capable synth ever invented, but what it does, it does well.
For the era, of course there were other synths which were compared to it which some people could say were better or worse, but they all do their own thing, and have different capabilities. Namely the Polysix and the Kawai SX-240. The Kawai is my personal favorite among these competitors, but they all sound totally different, and you can't call any of them overrated - It depends on what you are looking for. Nothing sounds more like a Juno 60 than a Juno 60, and you'll never buy a Juno 60 and be disappointed that it doesn't sound like the Juno 60 that you thought it would. It's a specific synth, so I think overrated is the wrong word.