Would have Messi been able to almost jump over Alex Sandro, a strong guy 6 years younger than Ronaldo, at the 92nd minute, and literally win the game with a header that was at the root of that penalty (even if it is a 50/50 call)?
I agree that the comparisons are fdup because both players are EXTREMELY influential. Messi's game is just a lot easier to spot than Ronaldo who has moments of physical brilliance that can go buy unnoticed for most.
People also think Portugal's win in the Euro was sheer luck. But look at the entire qualification stage? Ronaldo scored like 80% of the goals. And he has done it again this World Cup qualifiers.
Now let me ask you:
Would Messi have been bale to pull Portugal mediocre team scoring and assisting in nearly every game for the past 4 years?
As you can see. These questions are not as linear.
Hats off to Ronaldo for his aerial prowess. Dude's a terrific leaper and definitely the kangaroo guru of headers!
To answer your question as to whether Messi could've carried mediocre Portugal over the last 4 years, don't see why not. He's the more accurate shooter, passer, controller, creator, provider, retainer, … root+ er ad infinitum
Whenever playing with his NT, it's like they set up base camp and Messi has to turn into a super-sherpa and carry his choke-king teammates to the Death Zone.
You're right that Ronaldo plays the Alpha Dog captain role better though he's lucky to be surrounded by compliant beta-type teammates. Insert another big ego in the mix like Zlatan or Neymar and big chances they'd clash both in the locker room and on the field. In contrast, look how much Ney enjoyed linking up with Messi. Just having the chance of sharing the field with him on the big stage should be enough of a motivation anyways! If players can't be self-motivated and hungry for wins, just move on already and go
Not even sure if that's possible but I would've certainly tried it. 
