Both Arbitron and BBM offer some very helpful national perspective on why, even though we all love to cheer on a direct confrontation, it may be that everyone can coexist.
Here are three pages from BBM/Canada's 2010-2011 National Radio Data book which show how different the target audiences available on the two bands are today:
(click each chart to enlarge it in a separate browser window)
Two very nice things about radio warfare:
1, No one can take your audience away from you. You have to give it away.
2. No one dies, unless somebody ends up shooting themself in the foot.