Wish I had been at this battle to witness all the pikes/LS' stuff. It always makes me chuckle when people complain about them being broken or unfair because of their wonky animations, while many of the other weapons in the game have so many other issues.
The general rule to objects and pikes/LS': If you can get over/around the object its OKAY. Through the object is NOT. The amount of times that I personally have been 'sternly talked to' about pike abusing is many and most people do not realize that due to ping and the games mechanics, sometimes when a piker goes up and over or around a object so fast it actually looks like they are stabbing through it, while on the pikers screen he is doing nothing wrong.
This is how it works and has always worked and I do not think it will ever really be fixed in this iteration of the game. (Heres hoping to better netcode and animations in future games)