Shia Islam, Twelvers, and Sharia Law 

I find it rather odd that the largest denomination of Shia Islam is the Twelvers, yet Shia Islam dedicates less than 1 paragraph.  Rather small compared to the other denominations listed: Twelver 

Also, since a majority of Shia are Twelvers, and almost all Twelvers abide by Sharia Law, wouldn't it be more appropriate to at least mention Shariah Law since it's such a crucial part of Shia Islam?

So what do you guys think? Cheers!