They cannot handle 11.6MB unconfirmed transactions then how will they handle 20 MB blocks with 200 MB uncorfirmed transactions ?
It would be dramatically more expensive to spam the network with 200 MB of transactions.
Those were 1.2GB DRAM nodes, which are very limited VM instances with only a couple 100MB for the memory pool.
The poster said that his 2GB and 4GB DRAM nodes were fine, and they should be through 200MB blocks.