User blog comment:Hidden Sniper/Build Bulwark Every ARAM/@comment-5556439-20130524004934

I think its fairly interesting to think about how minute the aura from Runic actually is. Considering a champion can have an item that gives his team free defense needs to be kept in massive check, it makes sense for the defensive stats to be low.

The strength of auras however comes into play when you combine them with things like Tarics W and Sona. Also, adding this into the equation with carry's like Graves who have higher than average defense and ALSO take into account the players that build defense and only the completely necessary offense in their masteris, makes small stat boosts fairly nice.

An example of this defensive setup would be something like 17-13-0 with only the 100% necessary offense points like pen, AS, CDR, and Frenzy/Crit. But then in defense taking the Armor/MR but ALSO the underappreciated CC reductions, which can help massively.