Graphics on Macs suck the best you can get on a MAC is pathetic. IE Blows away Netscape. P3's blow away G3's. Yes, you can use Macintosh files on PC, you can read the disks. Decode the slow BinHex, .sit, .hqx files.
MACS are real slow.
You can't have any free ports. At least on PC their virus scans do something. No choices on programming languages. PC there are many choices. One button mouse gets really annoying.