I'm just curious, do you look at other people's gear or achievements?
Personally I don't care about achievements or titles, and only pause a sec or 2 if I see a cool mount.
As for gear, the only time I check someones gear is if they are beating me on the meters and I want to know why or someone is doing a horrible and I want to know why (ie poorly geared tank or healer or DPS player rolled as a Healer/Tank). Plus in BGs I show player health to determine how likely it'll be that my team has a fighting chance.
Other than that I couldn't care less, how about you?