EDIT:
I think many decks need to be run through a
Gauntlet of sorts.
I would truly like to know witch rw aggro is the best or how it could be better.
But there are many decks that Im curious as to witch are Tier 1.
For my findings. Many ranked players on the 360 have been very green. So it is
hard to say if a deck is good or not.
As a general rule, I playtest against the AI on medium for a few rounds, and then if that goes well overall, I play it online for at least 5 matches or more to determine a decks overall feel/consistency, etc.
I'm on Android so I don't know how good or not good players are except by watching how they play and their fluidity/dexterity (unclear if you can see stats/rankings on other platforms directly in 1v1). And for that matter, I'm not playing all the decks 'perfectly' either as I just found out last night I didn't fully understand wrecking ogre and bloodrush effect (now do and it was a huge power boost), sometimes on a new deck I think a card is an instant and go to play when I can't use it, etc.
I did play a 'The Champion' last night (has won 100+ games online) and was looking forward to that. I won with the 2bestest Amass the Army...however, he pulled out right up front likely due to over-drawing on his hand so that wasn't the true match I was hoping for.
The arguably best way to test a deck would be an automated setup that can proficiently play and then plays 1000 matches of random AI decks. By running such a large spectrum, the law of averages would kick in and eliminate a lot of randomness from a bad draw in one game, a perfect draw in another, etc. and I'm pretty sure the best decks would rise to the top.
I'm going to reply to your other thread, that looks interesting.
Btw- as an aside, one of the very, very best people I ever played back on PS3 turned out to be some guy named 'Richard Garfield'. He beat me when I was in the top 100, and I mean beat me in a way that I realized he knew this game inside out, upside down and backwards - no pause, or hesitation just constant optimal strategic adjustments to everything I did. I was blown away because he wasn't ranked at all - I looked him up afterwards b/c I was so impressed - found he is/was the inventor of Magic