Set your coordinates to 0.5 positions instead of whole pixels and look at the differences. Like if you draw a line from 100,100 to 200,200 try 100.5,100.5 to 200.5,200.5
For a quick glance, take a look at this nasty ultra-dense rendering in FF/Chrome and compare it to IE: http://projects.voanews.com/ebola-tracker/ (uses raphaeljs so renders in SVG or VML, whichever is supported.)
For a quick glance, take a look at this nasty ultra-dense rendering in FF/Chrome and compare it to IE: http://projects.voanews.com/ebola-tracker/ (uses raphaeljs so renders in SVG or VML, whichever is supported.)