If commander are very strong one might end up having to choose a commander very early. That was the complain about the Soviet factions previous design.
Well, that's one way to completely spin an argument.
Complaint about soviet design was that doctrines were NOT strong, but MANDATORY, because core army was not up to the task at all, infantry couldn't do anything else then stall for doctrinal upgrades/doctrinal infantries support and the only 2 vehicles that weren't utter shit were T70 and SU-85, so IS-2 and 34/85 have seen a wide use.
Tech design of picking one tier over another TWICE was also shitty design that limited stock options severely and forced doctrinal options regardless of their strength.
In short:
Soviet play was completely one dimensional with zero alternatives and it relied on doctrines to be competitive in any way not because doctrines were strong, but because core army was steamy pile of limited shit.
That's not the problem for any other faction.
If the core army is relevant, commanders will always be an option instead of early requierment, regardless of their strength(if they are within balanced state). Not all commanders have early game options either and still remain strong.