Neat. Postgres has always had a kick-ass I/O layer - particularly on ext4.
I think showing Q2 and Q11 numbers would've been great, because for something like Tez, this is how those plans look in Hive (before the cost-based optimizer work)
http://people.apache.org/~gopalv/tpch-plans/q2_minimum_cost_...
http://people.apache.org/~gopalv/tpch-plans/q11_important_st...
Postgres's query planner should shine for those.