I can achieve nearly identical gear RANGE with both a triple and a compact. However, a triple allows that same range with every cog spaced at 9% or less on the jumps. Nothing in double digits, if I recall.

That being said, 11 speed has all but eliminated that advantage. I've run the numbers, and that 11th cog tightens up an ugly jump in the middle of nearly every 10 speed 11-27 or 28 cassette.

Since I'm running 10 speed, I like my triple. 52-39-30 triple. A triple with a big ring of 50 is just dumb and redundant.