Vulnerable to bullets is one of the main reasons of her inconsistency.
Comics are comics, right, but still need some logic. She was knocked out by crow bars, needles. That's why her enemies were Nazy soldiers, street thugs.
It's LOGICAL because mortals can be fatal to her.
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Attachment 24940'cheetah was a crazy woman in dress, no magical power'
She don't fight street thugs now, so she doesn't need this kind of weAkness, because it's so easy to find a way to neutralize her(Batman would be happy).
But it doesn't mean that she need no skills. There're plenty of magical weapons around, still threatening her life. For example, Luthor's sister is using a pistol from Apokolips, I think that could be a threat to WW, or the sword Deathstroke is using forged by Hephaestus. Bulletproof, skillful, no contradiction.
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