Absurd. G version is not the better version.
Being a long term member in sgs2 thread, I've seen lots and lots of complains on g version.

Your point about being overheat is right though.
The reason why g version not so hot is due to the fact its capped at 1ghz.

But my phone since I bought it, I've been using it at 1ghz as well.
Its too easy to root non g so, and can easily under clock it to 1ghz as well to prevent over heating.

There is absolutely no strong points that g has that the non g doesn't have.

Non g is a g version that doesn't hang, everything works, no memory card issue, camera hang issue, music player skip track issue, lots of custom roms, more app compatibility, and doesn't hang when playing temple run.