I stumbled on a post like 10 years ago, and I was able to locate it just now. I remembered this post because this guys method of explanation is able to clearly isolate the required facts to communicate the idea efficiently and is very easy to read. I would recommend reading all the posts from the OP in this thread, but at least read the very first post.
Gear ratios, final drives, and torque - Team Integra Forums - Team Integra
then after that, if you dont read the whole thread, look at just this one post on the following pages:
Team Integra Forums - Team Integra - View Single Post - Gear ratios, final drives, and torque
notice that at not a single point on the entire graph will you find a gear that is able to put more torque to the ground than a lower gear number, at any rpm/speed at all.