... vice versa could be easy
I think that the writer is on a wrong track here as he is comparing two completely different things.
A new and fast rising standard for HTML and a browser plugin. The first being implemented across multiple platforms in rapid pace. The second being upgraded every 9 months and available on not all platforms.
Mind you I think both of these have huge possibilities and can do things that the others may not yet can do. I think they both have their unique use cases, but in most cases they have much overlap in possibilities.
Which one to choose depends on the situation and the market one is aiming for.
The article could have been a lot more subtle and a lot more realistic.