You know, looking at last year, I’d say he really focused on stage races by skipping Flanders and Paris-Roubaix. But your question is quite interesting, because if it were about any other rider, I’d logically say the gap to the others would be even bigger. With Tadej, though, I think that oversaturation from easy wins and too big of an advantage could quickly turn into a negative. In my opinion, the classics,especially the monuments, actually help him in stressful stage races because he reads and handles race stress better, and he’s better at recognizing his limits and masking them compared to others.For me this is the main question. If you are saying he wouldn't win so much if he had a severe crash. This is obviously true.
However other "aliens" would be able to beat Pogacar if they didn't crash? I don't think so.
There is other question important to do. What if Pogacar didn't focus his season on winning everything and targetted just GTs or classics? Would the gap be the same or bigger?
Still, I’d really like to see, on one hand, what a season would look like if he mostly focused on the missing stage races—something like a schedule of MSR, Basque Country, LBL, Romandie, Suisse, TdF, Vuelta, and Lombardia. That would be very easy to plan. On the other hand, I find him most interesting in the cobbled races.