[jakobnev]

What part of this is inaccurate?

Your belief that you went exactly the same speed after lifting off a bit, as you would have without doing so! (My claim here is that you have gone slightly slower that you otherwise would have, you simply don't know it.)

A claim that your engine makes the same torque at the same turning speed with both less air and fuel is not believable, and it would take very rigorous testing to convince a reasonable person of this. Testing, that you have not done!