Rodent Regatta

I’ve witnessed first-hand what a web site looks like in IE6 vs. Opera 7.1. It illustrates just how inconsistently the same code is being rendered behind the scenes.

Now, can someone tell me what the obvious differences – technical, funding or otherwise – are between Opera and Mozilla? Does one of these clearly have the upper hand when it comes to properly displaying sites coded to web standards? Does one of them perform better?

I’m looking for an education here, so point me in the right direction, and thanks!