Kinzer
Mammy
Sure you push them off, but Fair allows you to do the same method... just I don't know how will have Fair undecayed by the point that it will kill anybody, but it's still another method, you can't deny that.
Besides that, some opponents might be able to react to being pushed off by Nair, and since it's a one-hit move they'll be able to react, with Fair it's a multi-hit move and unless they are able to shield the whole thing they're almost guaranteed to take on damage or a seriously diminished shield.
Edit: Roy I don't think that will work, usually the last hit of Fair should send them a ways. At the very least, I can't see it happening
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Besides that, some opponents might be able to react to being pushed off by Nair, and since it's a one-hit move they'll be able to react, with Fair it's a multi-hit move and unless they are able to shield the whole thing they're almost guaranteed to take on damage or a seriously diminished shield.
Edit: Roy I don't think that will work, usually the last hit of Fair should send them a ways. At the very least, I can't see it happening