IE is actually better than chrome in regards to overall performance on battery operated PCs, let alone security and certain privacy concerns that IE doesn't have.
It's all the noise that says IE sucks when it really doesn't is the problem.
what does battery operation to do with performance between browsers? Are you saying when the laptop is plugged in, chrome is faster, and when on battery IE? IMHO Chrome is more responsive.
Regarding security I think they all have their flaws and today chrome has a security hole, and tomorrow IE, and the day after tomorrow FF.
My personal experience is Chrome is faster and crashes less with sites that play videos (flash, real player etc.). I'm speaking about plugged in desktop, if that matters.