How many orphans do you see here from btcguild?
Less than 1% (the general 'rule of thumb' that has been fairly accurate for the past 3 years is ~1%) in 2014.
Right.
But the time needed to propagate a smaller block to the network should be slightly shorter, giving the miner a slightly advantage in orphan block race.
And what's discus fish and ghash's orphan rate?