Men's (800, 1500, steeple, 5k, 10k)
# of Top 3 seeds from the East: 7
# of Top 3 seeds from the Midwest: 8
# of Top 3 finishers from the East: 5
# of Top 3 finishers from the Midwest:10
As for All-American,
# of Top 8 seeds from the East: 12
# of Top 8 seeds from the Midwest: 26
# of AA finishers from the East: 16
# of AA finishers from the Midwest: 24
So I would say on the whole, neither region did drastically better or worse than expected based on seeds.
For comparison's sake, over the past 10 years at nationals, the east has averaged 14.6 AA's in these five events, while the midwest has averaged 21.3, so both regions slightly outperformed what should be expected.
For the record, I'm counting anything from Ohio to Minnesota as Midwest and anything northeast of Pennsylvania and Maryland as East.