WGA54AG and WGA54G gaming adapter difference?

[Devante]

I looked online and it seems like everyone buys the WGA54G adapter, but looking at the specs, the *AG adapter looks like it's a better gaming adapter.

Another thing is the Linksys website only lists WGA54G.

So is there something I'm missing?
What's the difference between the two, and why is the *G more popular than the *AG model?

Thanks for any info!