User blog comment:Thomas.lopezalmenas/Hmmm/@comment-26435037-20140217203415

Okay, let's break this up to several categories.

Physical strength: Obviously, Pyrrha takes this on. Weiss appears to be the weakest of the main female cast in terms of physical strength, while Pyrrha breaks several trees like it was nothing, uses herself and her shield as a jumping platform for Nora, and pushing Jaune to the ground twice.

Semblances and Aura usage: Pyrrha's Semblance may render Weiss weapon as useless, given the fact she can control magnetism (and assuming Weiss' rapier is made of metal, most likely). However, it seems that Weiss can use her Semblance, Glyphs, without her rapier (Air Step?). Both girls seem to be very skilled in Aura usage. Draw.

Endurance: Again, another point for Pyrrha; Weiss was shown to be exhausted after running away from the Beowolves, following the battle with the Nevermore, and briefly after defeating the Boar thing (whatever it's called). Pyrrha was briefly exhausted after unlocking Jaune's Aura, but quickly recovered. Also, she showed no visible signs of fatigue after defeating the Death-Stalker (dat ridiculous pose..) Then again, Weiss' combat style centers around the usage of Glyphs, which drains much of her Aura, while Pyrrha relies more on her physical abilities in battle.

Speed: One point for Weiss; at times, Weiss can rival Ruby in terms of speed (not to mention that Ruby's Semblance is speed). On the other hand, Pyrrha seems to be the slowest out of teams RWBY & JNPR (as seen in episodes 8 - 9). This may be because she wears an armor, alongside her weapons. However, in episode 9 she wears her school uniform, yet still falls behind her friends as they race to class.

So, in the end, Pyrrha seems to have the upper hand over Weiss, being more physically powerful as well as having higher level of endurance (although this comes from their very different fighting styles, as Weiss uses more Aura during her fights). Weiss has an advantage in speed, but it is unknown how far it'll carry her in a showdown between the two.