Historical VtES Deck Size Statistics

Currently there's a discussion going on in the VtES Usenet Newsgroup regarding the optimal decksize. By chance, a few weeks I collected some data from Lasombra's TWDA, checking for decks and their number of cards used by tournament winners. As you can see 90 card decks make nearly 60% of the total TWD. This number has dropped in recent years, but still a fair number of decks from the past few years carry 90 cards.
Please take note the scale is logarithmic, otherwise you wouldn't see much beside the overwhelming number of 90 card decks. It looks as if there's no deck with the size of 69 cards, but due to the logarithmic scale the one deck with 69 cards is not shown.

In addition, some data from the VtES EC 2010. During the EC in Paris the average decksize of the five finalists of the five main tournaments were as follows:

• Legendary Vampire -- 78 cards average
• Last Chance Qualifier -- 78 cards average
• Day 1 Tournament -- 87 cards average
• Day 2 Tournament -- 88 cards average
• First Chance Qualifier -- 90 cards average
  

It's not so easy to draw any conclusion whether 90 cards decks are good (or even optimal), since you don't really know if these decks would have performed any better with less cards. On the other hand, decks with 60 or 70 are not automatically better than those with higher card counts, otherwise more of them would show up in finals or as tournament winners.

In summary, all I am saying is that historically (with the data given) there's no evidence that 90 card deck do inherently better or worse than decks with less cards.

Here's the raw data as extracted from Lasombra's TWDA:

Decksize	# Decks	Decksize Grp	#Decks
60	41	60-64	57
61	6
62	3
63	4
64	3
65	9	65-69	24
66	8
67	4
68	2
69	1
70	41	70-74	84
71	9
72	13
73	9
74	12
75	42	75-79	111
76	19
77	28
78	12
79	10
80	87	80-84	156
81	16
82	23
83	15
84	15
85	18	85-89	175
86	23
87	21
88	48
89	65
90	894	90	894