Character stats, and what do they mean?

so i love the stats blocks on the toys. they give me a real quick rundown of a character. but i got to thinkin..
lets say Optimus(g1) metroplex(g1) and random mini-con all have a str of 10. are they even? does the minicon have the same strength as Plex and prime, or are the stats proportional to size?
I know there is the argument for speed to vary based on land or air vehicle (a car with speed 9 which states about 250mph is slower than a jet with speed 9 at about mach 3, while swoop has a speed 9 and only a speed of 250mph.
so what are other thoughts on the subject? is prime the same strength as omega supreme and metroplex? is a minivehicle as strong as a larger counterpart?
lets say Optimus(g1) metroplex(g1) and random mini-con all have a str of 10. are they even? does the minicon have the same strength as Plex and prime, or are the stats proportional to size?
I know there is the argument for speed to vary based on land or air vehicle (a car with speed 9 which states about 250mph is slower than a jet with speed 9 at about mach 3, while swoop has a speed 9 and only a speed of 250mph.
so what are other thoughts on the subject? is prime the same strength as omega supreme and metroplex? is a minivehicle as strong as a larger counterpart?