I never said they didn't require a lot of micro, they do. But if you think managing a fuckload of infantry squads is easy for any faction your delusional. Good micro is needed at high skill levels no matter what faction you are playing, it's the key to success in any RTS.
There isn't some magic increased response time for OKW or Ostheer squads over Soviet and USF squads. If you are lazy and blob no matter what faction you are playing your going to get raped, hard.
Allies versus Axis in randoms perfectly demonstrates the concept of the skill ceiling versus the skill floor. It's easier to play OKW (not ostheer), if you are of medium to low skill and still do okay, but not as easy to play as either of the allied factions. Now at equal high skill levels we can see that pretty much every faction is equal in performance except Ostheer.
And randoms are fucking nightmare in any RTS, which is the reason why I don't play with randoms. Gaben gave us the friends list for a reason my friend!
Micro, cheese and meta is the staple of every single faction in the game period. I don't cheese any more as Soviets than I do as OKW. It's actually kind of more fun to play as soviets since I have a lot more toys in my toy box than I do when I play OKW. It's actually quite fun to abuse the hell out of the B4 and watch your enemies Panthers and Tigers cry as their shots bounce of the armor of my KV1's.
Even Relic stated than Allies need more micro than Axis, especially for the Armor part.
It is easier to micro long range unit, where you can simply focus fire, than "melee" units.
So I am waiting for your source for your statement.