I'm not sure "crap" is the word I'd use for that, but I think I understand what you're getting at. The problem is that the TeX fonts are designed to work at a much higher resolution (as is typical for being printed). They look much better in that case.
Yeah, i don't earn any points for eloquence, but just looking at the side by side examples on the MathML page the contrast is pretty stark. Have often wondered if it was due to low screen resolution so thanks for confirming that. I'll try to be less grumpy the next time I get a TeX generated PDF and maybe even print it out before trying to read it ;o)
