Just to prove you wrong, here's my super consistent 1-2 turn Red Nova Dragon out (or at least Red Dragon Archfiend).
It goes like
1st turn: Cyber Dragon/ Oracle of the Sun/ SOlar Wind Jammer out first, then any level 3 tuners. (Note the level 3 tuners are stalls, so that I can draw into stuff that I didn't managed to), then go for Red Dragon Archfiend.
2nd Turn: Go for Deep Sea Diva and summon another diva to double tune into Red Nova.
Assuming Red Dragon survives one turn.
And Diva is going to be at 1 coming Sept.
But you know, it's still pretty good.
maybe