I had a few problems with it while revising this:

1) It's not comprehensive to all possible technologies or solutions, particularly when you leave the JVM world and try and take into account everything going on in Javascript, Go, Dart, .Net, etc.
2) The "related technologies" are moving targets (such as the fact that Rx is working with this initiative to support all of this) thus baking any statements into this document then requires upkeep.
3) This document and project should focus on what this new specification and contract is, not what other projects are. 

In short, comparisons should live elsewhere, not in the specification and contract documentation which should be timeless.