"Characters at character creation may only have 1 Mental or Physical attribute at their natural maximum limit; the special attributes of Magic, Edge, and Resonance are not included in this limitation." (middle of second column, p. 66, SR5). That's the only restriction, and it's the same limitation as it was in SR4 (p. 82, SR4A).
The rule you're citing (1 at 6 or 2 at 5, the rest 4 or lower) was the SR4 limitation on starting skills (p. 84, SR4A). This rule does not exist in SR5.