Apparently the OP is unaware of The Bogleheads Philosophy item #4: "Never try to time the market."
If so, please go to the Bogleheads wiki and read up on anything you can find about market timing.
mbk734 wrote:For those that are believers in the small cap value premium over the long term, why not bet it all on VBR while you are young (18)?
Wade's chart compares age 62 vs. age 70. The OP is comparing 66 vs. 70. If they're each doing their math correctly, they should get different answers as to break-even points.