And let‘s see what an actual Mac Pro performs like.
Also weight: over 7lbs, and it doesn't even look like that counts the power brick necessary to use the full performance of that machine. It's not a laptop by any reasonable definition; it's a luggable. It's desktop parts squeezed into a form factor that resembles a laptop until you put it next to a real human for scale.
I think later this year we might see slightly smaller HX form factors with Legion 7i and others coming soon. I never really understood why extra 3-4 lbs is such a big deal, I do carry a lot of gear every day though (and squat fairly heavy), so it might be a question of habit. :-)
I'm having a very hard time taking you seriously here. Do you really have trouble understanding why most people would prefer not to carry the weight of two laptops when they could carry the weight of one laptop instead?