I have zero experience with the simulator thing. I tried the I-racing few times based on recommendations from my racing buddies, but it kept giving me the headaches. All my driving relates to the real world.
That said, my choice of words "entry speed" were not so great, I should have said the "corner entry" that encompasses all those terms like slip angles, rotational speed, etc.
And Shumacher? Come on, man. The man is the multiple world champion! I'm just a guy who does time attacks, lapping and teach at trackdays. Sure I hope I can drive like him, but we all know that the reality is far from it.
IMO, left foot braking is visceral in that some can do it comfortably with little practice while others simple can't no matter how hard they practice. I encourage some of my students to engage in LFB, but it simply doesn't work for some. And, that's all I am trying to let you know based on my real world driving experience.
I sincerely urge you to go out and drive in real world environments! I bet it's going to be so much more fun than your simulator.
Don't be surprised your LFB skill don't translate into the real world driving, though.
Peace out