We should take these figures with a grain of salt. 200 games is not enough to get a precise estimate of a deck's speed.
willng3, thanks for providing a detailed breakdown of your TTW results. With a little statisics, that allows us to estimate how close the TTW average from those 200 games is likely to be to the TRUE average if you played thousands of games with the deck.
ttw 3: 0
ttw 4: 24
ttw 5: 74
ttw 6: 47
ttw 7: 21
ttw 8: 11
ttw 9: 10
ttw 10: 4
ttw 11: 0
ttw 12: 2
ttw 13: 0
ttw 14: 0
ttw 15: 0
ttw 16: 0
ttw 17: 1
A little calculation tells us that the standard deviation of a given game with this deck is 3.01 turns. From this we can calculate the standard deviation of the average, by dividing by the square root of the number of games. The standard deviation of the average TTW is 0.216.
What does that mean? It means that we only have 68% confidence that the TRUE TTW of this deck lies within 0.216 turns of 5.94. If we said that the true TTW of the deck is between 5.724 and 6.156 turns, we would have a 32% chance of being
wrong.
That's almost half a turn - not very precise at all!
In conclusion, if the calculated TTW of two decks lies within about half a turn of each other, we can't be sure which one is faster - the TTW for either of them could easily be a random fluke.