Is there any advantage to long stroke short bore engines from a performance standpoint...

long stroke is mostly shit for performance, although it can mean you can run flat top pistons and still have good compression

maybe this shit I threw together in paint helps

forgot image

>filename

IDK, my 4cyl yj runs at a way lower rpm then my friends 4cyl 4runner that has a much shortter stroke and it's pretty noticeable the power at lower rpms, regardless of the fact that his is a 2.7lt and mines only 2.5 they 2.5 with a longer stroke is more powerful on low end, while the short has way more top end and can just keep going.

I get it. But it isn't about one vs the other. Remember. Travel/track vs Torque. Long strokes might be able to move the crank at high speeds easier (removing the valve float and friction losses) but that means that its gonna need to go at a higher RPM to deal with the same amount of HP.

You won´t gain anything with a long stroke, your torque will allways be around 100Nm per litre displacement.
You could only change the specific torque by forced induction.

>You cant put torque without creating work.
Oh dear...
Do you know what differential equations are?

...

SHORT strokes are key when it comes to moving the crank at high speeds. That's why sportbikes that rev 14k+ usually have a bore about 50% greater than the stroke.

Mostly correct and a good rule of thumb. But very large bore relative to stroke allows for bigger valves than a more narrow longstroke bore (more surface area), so in very high revving applications you will see higher numbers.