yeah, that's why strategy isn't possible (in the large scale) in PVP TT. Sure you can easily predict your own moves based on you deck and your opponent's moves, but there is no way you can predict what they will do and when they'll do it, because there is no way you can guess their deck (unless you've already played 5 times with them against their 5 decks, while having them begin each time which is RNG, without allowing them to change any of the cards they use.... which is a hell lot of conditions).
While the chess/speed chess vs TT comparison is a good one regarding the time to make a move, i's a bad one if you consider the essence of the game.
Chess is about long term planning. You can plan beforehand because you're likely to know your opponents, their opening, reactions, strong points and weaknesses, etc.... So you can put up a plan to counter them. If that doesn't work, strategy and tactics come in play for quick bursts or long term moves to get an advantage. All in all, you'r not likely to win in a few moves in an equal match.
TT on the other hand, is mainly about short term action, due to its nature (9 moves in total), and the unpredictability of its PvP. You can't plan anything beforehand if you aren't in PvE (the IA is dumb and uses the same patterns 90% of the time. Learn those fix patterns and adapt, you'll win). You cannot guess which cards a player will use, thus you cannot have a strategy against them. All you have left is luck and really short time planning on your moves, by example if a "plus" pattern appears and you just happened to have the right card to activate it. You can't force a player to enter a winning pattern because you have no data on his deck.
In regards to that, the time allowed to play doesn't matter. It helps to make quick maths for plus, same, ascension, or similar, but other than that, there is nothing more you can do.
edit : actually, the only rule that would allow anyone to plan anything and could allow more time to think is the "all open", and eventually "three open" but there are 2 unknown variables in the planning, which always lead to bad plans. You can't plan anything good if you don't know everything