Player one just always wins, if they have a brain anyways. It's a flawed concept in itself. If there were some strategy this would probably be a good game, but it's just as simple as picking the bigger number. Which means the one who goes first, always wins.
An idea for it could be a turn penalty for picking larger numbers, or that leaving a number longer increments it, or that instead of taking points you would gain possession of that tile specifically and have it increase your score over time. There are plenty of better ways you could've done this, but instead it's just broken.