By those metrics, sure you can put McDavid ahead slightly but that ignores a bunch of factors.
One, who was Crosby playing with in 2007 at ES? Colby Armstrong. Yup. He played with a 38 year old Mark Recchi at times. It's a nuance that most people either are unaware of or selectively ignore. Sid has almost always dragged around less than stellar linemates. It's one of the most impressive things about his scoring resume. Ovechkin for example has played almost his entire career with a near stud C in Backstrom. Crosby once played with Marian Hossa for a few months. And they were ridiculous together. I understand the concept of Sid carrying lines and putting better players on the 2nd and 3rd lines to make it tougher to defend, but beyond injuries, 87's stats are even more hampered by the quality (lack thereof) of scoring line wingers he's had for the vast majority of his career.
Two, Crosby was 35 points clear of the next closest scorer on the Pens. Malkin. That's absurd. 52 points clear of 3rd. Drai was 23 points behind McDavid. And Malkin is a far superior player if we're being honest.
Three, Joe Thornton was/is a better overall hockey player than Patrick Kane. You're acting like McDavid winning the Art Ross by 11 is some massive difference from Sid winning by 6 over Thornton (btw Sid missed 3 games as well). It's not. I'd agree with you if we're talking about a 20 point difference. But we're not. Plus, Sid had a 21 year old Ovechkin that he smoked by 28 points in scoring. Who was McDavid beating? A 29 year old Crosby and 31 year old Ovechkin if we're talking the best pure talent. Other than that, Kucherov, Backstrom, and Marchand were top 5. All within 15 points. Guess how far behind Crosby the 5th place scorer Marty St Louis was in 07? 18 points. And MSL is better than the 3 names I have on the previous line. So yeah, it's a neat trivia that McDavid was the only guy to hit 90/100 points but it's not like he blew the field away when you go numbers 2-5.
So no chance a 20 year old McDavid's 2nd year was better than Sid's 19 year old, 2nd season.
But I don't expect either of us to budge given our allegiances.