The DamagePercentBonus data requires a bit different approach if you want it tabulated:
Step 1) Copy and Paste DamagePercentBonus block to a text editor with "regular expression" find & replace capability (I use TextPad)
Step 2) run the following regex replace:
regex:DamagePercentBonus:\([^:]+\)
([^ ]+\) \([^\n\t ]+\)[^\n\t ]*
replace:\1\t\2\t\3
(note that your text editor's regex dialect probably differs from textpad, and you won't have to put the \ character in front of ( or ) to get the match capture)
Step 4) Add a header line at the top of "WeaponType ArmorType DamageModifier" (note the tabs, important for parsing by excel)
Step 5) Make sure Excel (or OpenOffice, or whatever spreadsheet program you like) is open
Step 6) Highlight the whole file, CTRL+C (copy)
Step 7) Paste into your spreadsheet program, it should automatically parse out the tab-and-line-break delimited data into a table, which you can format and play with as you like.
Step 8) (I'm using Excel 2007 here), go to Insert, then PivotTable, make sure it's using the whole range of the data that you just pasted in, and that it's putting in on a new worksheet (cleaner that way), and click OK
Step 9) Put "WeaponType" in the Row Labels box, "ArmorType" in the Column Labels Box, and "DamageModifier" in the Values box (make sure it does Sum of DamageModifier rather than Count or anything else)
The data should be tabulated now.
(Edit: note that excel will give you totals and subtotals that you probably won't care about, they can be turned off)
