I count 8 JVDA teams; 14 USAV; (and 6 not returning to Open at either contest) from the 2007 JRNationals Open Field (but am always happy to be corrected).

Using this baseline:

The 18 Open Field at USAV will be comprised of 50% (14/28) of returning Open Teams.

The 18 Open Field at JVDA will have 24% (8/34) per the JVDA Website.

Average finish of Open Teams in the USAV Field from last year is 15^th.

Average finish of Open Teams in the JVDA Field from last year is 7^th.

(Taking only the Top-8 teams from USAV yield an average finish of 10^th.)

Doing a quick look at the remainder of both fields, USAV will offer a more balanced and competitive match-to-match tournament based on the percentage of teams in the field that have some level of experience at Nationals (no brainer right?with 50% returning from Open last year and then including National and American Club teams in a restricted 28-team field.)

Looking at JVDA Field, overall the quality of the Top-Tier teams (8-10 maybe?) in Open are probably better than the USAV field but the competition level in the remaining field drops off significantly (some clubs sending their -2, -3 squads) to JVDA Open. This should equate to a very long first two-rounds due to significant play inequity.

My overall hypothesis would be that:

"If the 28-team field from USAV played the Top-28 teams from JVDA in a single match that pitted 1 versus 28; 2 versus 27; and so on…USAV would win 18 of those matches based on a more balanced and experience field."

Playing the #1s, #2s, #3s and so on against each other would project to a 3-7 advantage to JVDA through the first 10 positions (close to what they accomplished in Open last year at JRNat) and then a 4-14 USAV advantage from 11 through 28 yielding an overall 21-7 (margin of error + 3 matches) USAV to JVDA match record, again due to the significant drop after getting past the top-tier JVDA teams which are impressive.