Safari browsing battery life

Hi, i have an IPod Touch 5th gen white, my usage data is

2 hrs 24 minutes usage

2 hrs 40 minutes (with wifi)

My battery is at 77% (Battery doctor and VoiceOver)

Browsing ( 1 1m video, 4 2m videos, news, photos, fairly big pc-only website) Subway Surfers 2 times, Ant Smasher, push-notification all on, twitter)

Is it normal? :D thanks for answers