TSM or C9?
The thing about TSM when they get on the international stage is they play too passive and reactionary and they also seem to just copy paste what Korea does which is never a good sign as all it does is gives Korea a way to counter it as they already "wrote the book" on the meta so of course they know how to counter it.
Look at CLG at MSI and Worlds this past year what was their phrase " Respect all - Fear none"
TSM on the other hand respects their opponents too much to the point where they act scared.
2014 Worlds vs Royal the first game TSM didn't do anything against them and just lost the game easily. The second game they actually beat Royal by not being reactionary but engaging and being aggressive.
Same thing vs SSW that same Worlds games 1 and 2 TSM played too scared got triple buffed and just lost but once they had nothing to lose in game 3 they invaded and got a double kill and eventually the win.
This past year vs SSG they were the aggressor and won easily but after that game they became too passive and lost most of the games after finishing 3-3 overall.
Cloud 9 The main thing that always separated TSM and C9 is the players on both teams and the way the play together.
C9 Hai would make TP plays or TF Ults to help get his teammates ahead or himself as well as just being a great shotcaller while Bjergsen rarely helps his team.
Look at 2014 Summer/ 2015 Season, he barely helped anyone but himself, he got all the ganks, gold, cs, roams, etc.
Bjergsen would have 350 cs and Dyrus would have 190 and Bjergsen would go clear like 5 waves near the second tower on his side of the map while Amazing/Santorin would be warding on that side, while Dyrus would need to go to the enemy side 2 tower to get 2-3 cs, dies but no objectives would be up so the calls were either lazy, dumb or selfish.
Turtle or D-Lift ?
I like both players but both are different.
D-Lift will have free kills right in front of him but he focuses on CS instead too much. Cs> 2 kills D-Lift strategy.
He also needs so much gold but his production just wasn't that great compared to other ADC's across the world. Like he would get 30-40% of the teams gold CLG/TSM overall but his DMG would be much lower and his DMG per min as well.
His positioning is actually worse than Turtle's in teamfights at least Turtle gets caught out most of the time in dark areas but he actually positions himself in teamfights much better in my opinion than D-Lift.
The only time I saw D-Lift position himself in big games was against C9 in the Finals with the Lucain other than that he would be too aggressive trying to hard carry at times that wouldn't need him to do so but he would get swatted and get blown up.
Turtle actually carried TSM in the Playoffs back in 2014 Summer/ Worlds.
Turtle was against Uzi and Imp/Mata and would actually have CS leads on both and didn't die randomly in lane against them at Worlds.
Turtle knows whats going on and can hear the chat in the grapevine, he knows fans aren't happy with him so why would perform well when he doesn't get any support from "fans". It was all Turtle's fault back in 2015, was it - NO! but he got roasted, blamed, benched and eventually got kicked off the team like garbage.
So it's in the back of his mind " If I don't perform I will get the 2015 treatment again". Also look at some of the Hauntzer kills this split, he would flash at points that wasn't needed to pick up a kill with Turtle being right there. So overall it's not Turtle's fault and never was just HIS fault.
Overall if a player needs to step up on TSM it would be Bjergsen. Way back in 2013 when he was on NIP he would get all the gold and still didn't win too many games, he would get to playoffs and be given the NFL Bengals treatment of being eliminated in the first round each year. Now on TSM he still gets most of the gold/cs/ganks etc but they keep the same style at all international stages where it's predictable and achieves nothing.