The Army has to get smarter about it's operations. It has to be more flexible and leaner and lighter. The US does not have the airlift and sealift to put divisions on the ground in days. It took them 6 months to get ready. The other services were in the AOR within weeks, not months or years.
I can understand where Rummy is coming from. Hell - the Army has not gotten out of Germany, Kosovo, Korea,Japan, Egypt and Haiti is still a steaming pile.
As for China, there are plenty of strategic targets that will make life unbearable for the Chinese. I would not want to set foot in the country, wartime or not. And if something does happen; they will not be driving tanks across the Pacific or Airdropping Chairborne rangers during the first strikes.
The other services used the same lift (air and sea) as the Army -except a few amphib ships that did not carry all the Marine stuff. Rummy tinkered with the Centcom TPFDL to move other services first. Nice cheapshot, but wrong.