That's the thing, it isn't one or the other. I can't judge PSABR because I haven't gotten my hands on it yet, but if you find it uninteresting because of balance, then what about a balanced game that is also interesting?
If two new players pick up the controller, one picks metaknight the other link, odds are that one is going to have less fun in losing all the time.
I'm not speaking specifically of balance, but your assumption that Meta Knight is so overpowered that he's an instant win even to a novice is ridiculous. Ultimately this is the kind of thing that has a much bigger impact on high-level competitive play than anything else. As for why I think PSABR is less interesting, it's because it caters more towards a small minority I'm not a part of. Not saying I wouldn't enjoy it as something similar to SSB, but it doesn't appeal to me as much. A whole different philosophy is at play.
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