I went ahead and created spreadsheets to handle the IOmeter results extraction. vmktree was displaying it's parsing script today. I figured there was 50/50 chance that was just for requests coming from my router since I must be exceeding reasonable use! So I figured I owed ya.
I added a comparative feature which assumes you take a base test, then make a configuration change and test again and want to see the change between the two results. There is a file that handles a test from a 2 CPU system and a 4 CPU system. You'll need to modify the row reference values in the xExtract worksheets for different numbers of CPUs.
To use: open results.txt as comma-delimited text with no text-qualifiers in excel. Copy that worksheet into the BaseResults worksheet. Repeat for ExperimentalResults, which are your results following a configuration change. Evaluate the improvements in the Change worksheet.