It's all the same, until the stock starts to go up again. I bought the stock at 80 last time before it split, I got 20 shares, it split, I have 40 shares now. Now for every point it goes up, I make $40, instead of $20.
You have the same value at that instant, but if the stock ends up going up, you make twice the money.
You have the same value at that instant, but if the stock ends up going up, you make twice the money.