Which is precisely the point. It's a rare occurrence for anyone to get to 1000 wins, but since it does happen on occasion (and we do occasionally see multiple people over 500 in these events), I figured I'd make it so anyone who is going that extra mile gets a bit more rewards to go with it.
There's a reason the last half a dozen tiers repeat... they're not for everyone. Don't be distracted by crazy stretch goals; aim for the tier you want to get to and go for it!