Sure a perfect notching helps, but thats not all. You can change your tactic on anti-bng and then its almost useless. You also can watch plenty of Elites from Random00 without one single notched molotov or nade / zook.
Sure a little screen is an handicap. But the biggest factor is in your head. When you dont believe having a chance before the game started you probably will lose. And if I check some random replays a lot of games ending only with an one turn advantage.
So yea, notching on a small screen is hard. But other factors (technic, tactic, mental) are much more important.