Not a sensei or moderator, but this would be a pointless fight to be thrown to them in my eyes so allowing me to post my thoughts on this little fight. Now from the point that sho didn’t defend from the kunai is the instant he is in the red. An explosive tag may seem like it won’t kill but from seeing in the manga, they can pack a punch.
Now I believe that a direct contact explosion from a tag would kill or at least leave a person badly injured, but the tags landed and exploded at two meters from which is roughly 6-7 feet away, now I can say that Shun can survive but will be severely burned from the explosion of the tags. So considering that into the fact that he used Lightning Fang after Strike Armor which is just when the tags are released and explode.
Timeframe so far:
-Spikes
-Armor/Tags
-Lighning Fang
-Azure
With that frame, the lighting fang would hit Bolin, cause one what your doing is actually a freeform dodge, which in this case I’d say it was that case. Your using the description of movement to try and avoid an oncoming technique which id say is not able, though I could be wrong of this case, but even if you did, your both the same rank which means your jutsu performing would be equal in terms of speed HOWEVER, Shun is producing a lighting tecgnique which is one of the fastest of the basic 5, if not , the fastest. So id assume Bolin get a direct hit, and also fried since its also in contact with water.
My two cents would be both parties is injured(Shun burned severly and Bolin shocked but not entirely dead)