QUOTE(fishcake @ Nov 19 2011, 02:50 AM)
IMHO, in Tetris Battle, ST stacking works well because you don't have to worry much about downstacking. Even if you get KO'd, the game will still continue. And your garbage lines will magically disappear after that. So all you have to do is stack really fast, sending as much lines as possible in 2 minutes. In the end, the player with the most lines sent and KOs wins the battle.
In "real" games (are they called VS games?), the game ends when either player gets KO'd. The nature of ST stacking is that the stack is quite high most of the time. So it's hard to pretty hard (or impossible?) to downstack. I guess it will still works against slower players, because you can always cancel their garbage by timing your T-spins. But if the opponent is fast, it's pretty much impossible to cancel their garbage, because you can only send lines when you get a T or I piece.
You can try using ST stacking against a fairly fast AI in Nullpomino, and you'll see why it's a bad strategy. You're pretty much dead when the AI manages to send you garbage, and the "hole" is located somewhere underneath your stack.
pro. Couldn't have said it better meself.
Also, shoutout to B1ink!