I'm sorry, but 1 peek at lvl 1 doesnt decide a 3 game match. If TSM was good enough to win it all, they would still have won this matchup.
lvl 1 has a big impact on the game. With Dyrus lvling Darius pull attack it could've gotten first blood and then snowballed top. 100 gold advantage is better then a 0 gold advantage. Maybe you should go back to playing against bots.