OK. Shallan is one KR step ahead of Kaladen per WoB

[Shards of Mist he/him]

Saying a set of ideals doesn't make someone a master of their craft.  Kaladin was always amazing on the battlefield.  He nearly killed himself in training to become so.  So, give him superhuman reflexes combined with his battle sense and he becomes Superman.  It's not even a surprise.  I expect if you were to give Adolin or Dalinar the same type of abilities that Kaladin has you would see them become forces of nature as well.

 

Shallan really does have amazing powers.  She's able to fool one of the deadliest organizations on Roshar for most of the book.  These aren't average people.  They are people who know and understand investiture and are seeking it out.  She still fools them until the end of the book.  She also will likely amaze us all when she finally starts working on her soulcasting.  Lightweaving is a much more subtle power.  It can be powerful, but isn't so much in your face.  Soulcasting is in your face.  The things she could likely accomplish as a soulcaster at this point are vast.  She just needs practice on doing it.

 

That said, it does seem like Kaladin is able to do more with Stormlight than anyone else at this point.  It could very well be that a stronger bond with your spren gives you more power.  We still don't understand entirely how it all works.  It's also very possible that, even among Radiants, people are given different levels of power.  We've already seen on other worlds that not everyone has the same level of power granted to them(i.e. Mistborn).  

Edited April 17, 2014 by Shards of Mist

[Patrick Star]

Kaladin is definitely a stronger Radiant than Shallan.

 

Kaladin can use his surges on Sticks.  Shallan can't.

[Shards of Mist he/him]

No one on Roshar can make stick do what stick does not want to do.  The only reason Kaladin was able to use stick is because stick wanted to fly/stick to the wall.