Yes, the chart you show is for the purchase option, and clearly shows tax on the entire amount of the vehicle, not simply on the monthly payment. My hunch is that the dealer's lease calculation is double-taxing you (adding monthly tax based on a selling price that already includes taxes). If you clarify the tax situation, the payment discrepancy should go away.
2013 X1 35 MB/Black/ULT/CW/HK/Lighting/Paddles
2009 335i xDrive Coupe Black/SB MT/SP/PP/CWP/PDC/Logic7/iPod
2004 325iT SB/Black SP/PP/CWP/PDC/HK/Step/Xenon
2006 X3 SG/Black PP/CWP/Xenon
2006 330i SG/Terra MT/SP/PP/HS/CA
2004 330i SG/Black MT/SP/PP/HS (my
2001 325i SG/Black MT/SP/PP/SF/Xenon