Long Rod 2.0L questions

[sleepydsm]

I only recently have read about a long rod 2.0L engine.

Apparently you get a nice torque boost similar to doing a 2.3L stroker (because of the longer rod)

Can someone explain to me exactly how? Is there were a simplified image of a triangle comes in and the now longer rod forms the hypotenuse of the triangle, the crank a short leg, and the other leg I think the wrist pin to crank center?

Also, people claim much higher revving ability mostly in part to a much physically smaller and lighter piston. But doesnt this long rod (156mm) combo have a worse rod ratio than say a regular 2.0L?