i'm sorry but comparing 0MQ to these other systems is caca doodoo. i'm telling you as a developer who has on multiple occasions considered using 0MQ it lowers my trust in you as an evangelist for the platform to suggest that this is a relevant or worthwhile comparison to make.
Consider my comment in the context. The comment I was replying to says that 0MQ/XS is not lightweight because it has too much code. That's simply not true and that's what I was alluding to.
Might want to try this comparison again when 0MQ (or is it xroads?) supports clustering, high availability, durability, web management, federation, & STOMP.
0MQ ~15k LOC RabbitMQ ~107k LOC AMQP Qpid ~542k LOC ActiveMQ ~1160k LOC