Well, yeah, of course.
But the instant Ruby is intentioned by do her AoE, Snow will jump back.The instant Ruby is intentioned to shoot bullets, Snow will dodge. The instant Ruby is intentioned to use her Semblance, Snow will react accordingly and avoid in advance or block with one of her weapons. The instant Ruby is intentioned to do anything, Snow will know about it before Ruby can even start casting/attacking. Snow is faster than Ruby at base, in both combat/reaction speed and running speed. If Ruby goes further and is thinking of a strategy to beat Snow, Snow will be completely aware of that strategy and counter with her own, as Snow is a great strategist herself.
Snow has her Luck on her side, so if she ever comes close to being in trouble, something will happen to save her. Ruby has the range and versatility advantage. Ruby has the AP superiority and Snow has the minds superiority (not saying Ruby is dumb, I've read her profile, but Snow can strategize against armies and governments, and will use any information and ressource at her disposal to execute her target). Ruby has her crazy acrobatics skills and Snow has mind reading, allowing to pick up on any anxiety, nervousness and fears Ruby has and exploit them. Their stamina, experience and weapon mastery are comparable.
From how this looks like, Ruby can keep Snow at bay, and Ruby can't hit Snow. That leans more towards an inclonclusive result, if anything, then.