Word processor, Spreadsheet, Presentation, Drawing: Sounds like Microsoft Office. You *could* buy it from Microsoft (which you would need to do if you got a Windows machine - so the cost is the same...), but just for grins, you *could* get NeoOffice which is OpenSource and free and compatible with Microsoft Office - I transfer files between my work Microsoft Office docs (my company issued me an HP laptop) and NeoOffice all the time... "Save As..." and pick the format you want.
Video editor, DVD menuing creation, MP3 storage/library: on the Windows side, the bundled attempted equivalents are Windows Movie Maker, WinDVD and any number of audio programs (not necessarily from Microsoft) - though Apple's iTunes is a free download. Then add graphics library, make your own music: I don't think there is a real equivalent on the Windows side from Microsoft - but when you put them all together on the Mac side, it is called "iLife" and it is bundled with the machine: iMovie, iDVD, iTunes, iPhoto, GarageBand... and you can set up your own web server with iWeb.
With Windows, you *SHOULD* get some sort of system utility (like Norton Utilites) and antivirus is a requirement... Both are unnecessary for Macintosh (you can get them if you want, but they really are unnecessary - DiscWarrior or TechToolsPro and um... I guess ClamX which is free to download).
So... what part of "the software is more expensive for Macs" does this get to? From my calculations, it seems the software is more expensive for Windows machines... because they need more... I don't know which Mac you are looking at, so I went for the middle range... if you want to know about Apple Macintosh bundled software, you really should check with Apple... http://www.apple.com/imac/specs.html
Scroll down... on the right side where is says "Software"... the bundled stuff is the same for all the machines. The Microsoft Office test drive included in the bundle is just a trial... same with iWork.