TSM!!! TSM!!! TSM!!!
"YES WE CAN AND YES WE WILL!"
-2015 LCS NA Spring Split Champions
...on a more serious note: TSM needs to radically upgrade it's Teamfighting abilities/consistency if it wants to win MSI. Although they can teamfight; the results are not always reliable and because Asian teams have a hyper-aggressive playstyle, they may be caught off guard more then once.
I must say Dyrus did good this time which was surprising alas. Indeed he did get to play League of Legends. GG with Lustboy on support
. Not only did C9 ban attempts to target support backfire... it actually gave TSM a composition that worked even better.
Also... why does anyone use
anymore? She has been completely a waste of space LCS wise for ages now, and even on the few games her team wins, she has little impact thereof.
All in all: Outside of first game "sloppiness" which seems to follow TSM around, they did dominate the series thereafter. If they can work on some things they are still shy on, and make sure to get their teamfighting in order for countering Asian playstyles, they should have a shot at MSI.
That is... if Fnatic doesn't stop them first 
Indeed it is so...