Oh, ok. That makes this more interesting. They should be pretty equal from what I see.
Let's see. The Silver Eyes will be no issue here, I guess.
In Mid-Range I think Kats Stasis Field throwing and Gravity Typhoon techniques have an advantage over Ruby's shooting. She can launch multiple projectiles at once or in quick succession this way.
Due to the large recoil of Crescent Rose, I imagine that doing such rapid fire shooting is more difficult for Ruby. At least when she has to dodge at the same time.
This is enhanced due to the fact that I don't think Ruby has the leisure to employ the rifle mode for mid-range shooting or to embed the blade into the ground. That is due to the fact that Kat can teleport with wormholes, meaning that she could at any point appear right behind Ruby. If she doesn't have her melee weapon ready to defend and counter-attack then, she will take hits.
Due to her Aura she initially has to option to tank those, but that wouldn't give her an advantage, as Kat can just go back to mid range at any time.
In long range, like at a hundred meters +, I could see Ruby having an advantage as Kat doesn't often fight at that range, but I can't see how Ruby would maintain that distance with Kat's teleportation. In fact, hitting Kat over that range would be very hard.
Now, in close combat I think Ruby's scythe mastery is greater than Kat's hand to hand combat capabilities. If it's a fight of Gravity Kicks & Spiral Claws against Ruby's Scythe and gun combination Ruby would get out on top.
However, the Lunar Style in particular can make it difficult for Ruby. Quick chains of teleportation which are immediately followed by kicks is hard to keep up with and the Vortex Field can stun her and reflect her attacks.
The most lethal attack Kat has in close combat would be her Black Hole attacks of course. I don't think it is healthy for Ruby to get caught in these, so she must at any time be ready to disengage, which prevents her from fully investing into close combat. Without knowledge the black hole can also take her offguard.
Ruby's semblance can of course be used to further incerase her close combat ability. With teleports and the increased speed offered by the lunar style Kat should not be outclassed, though.
Another thing we shouldn't forget is that in close combat Ruby is in range for Kat's statsis field, meaning that Kat can at any moment push Ruby in any direction she desires.
In total I give this to Kat. I think she has the control over the battle distance here and can use that and her other abilities to stop Ruby fro making effective use of her strengths.
WeeklyBattles wrote: Ah okay, yeah its not full auto but Ruby can get a firing rate of up to five rounds a second
For a hypersonic character 5 rounds per second are technically extremely slow...
Well, it's somewhat faster than I imagined, but I still think that in speed equal she is at a disadvantage against an opponent that can fire many projectiles at once.
Ruby spams her semblance in combat in this key so she'd be entirely capable of instant disengages if need be
Disengage against a black hole isn't that easy, though. Black Holes have the tendency to pull things towards them. So if Ruby is in the middle of a full force jump towards Kat, boosted with her recoil and everything, turning 180° and getting away in time will still be hard.
They are called micro black holes, but the event horizon from the biggest ones are like a dozen meters.
There's no way RWBY's semblance is enough to escape the pull from a Black Hole's event horizon. Even if she's outside of that EH, she likely can't escape because of how absurd the strength of the pull is.
It's a pseudo black hole, as the pseudo black hole creation on Kats page indicates.
That being said the gravity is still way above everything else Kat produces.
In fact at her absolute peak Kat can create a black hole (that might be real...) which is so hard to escape that she herself needed at least a year to do so and could permanently seal a force that was slowly destroying the entire world. Given that's pretty much a suicide move, but the point is her black hole gravity is extreme compared to her usual strength.
The WoR literally outright states Semblances are a product of Aura
Yang runs out of Aura after using her Semblance on Adam
Tock runs out of Aura when she uses her semblance
Ren states he doesn't have enough Aura to hide everyone's presence on the train, so Jaune Amplfying his Aura made his Semblance stronger and last longer.
Emerald loses a portion of her aura when she uses her semblance in Coco in Volume 3.
And yes I'm well aware there are moments where characters use their semblance despite their aura being down even though the show shows and states otherwise, but those are very clearly inconsistencies in a show that's been criticized since it's inception for being inconsistent.
And don't even get me started on the dozens of series moments where characters don't use their semblance in ideal situations after their aura is down.