That's about it man, you pretty much have it all summed up.
Lowering compression gives you a bigger window to fuck up when tuning, but it also effectively slows down your car...takes more boost to make the power. Leaving the compression the same, or raising it with strong higher compression pistons slims down your window of allowable tuning error, but it will leave you with a much faster car, with less boost...and on the same amount of boost as the low compression, granted the tuning is good...the high compression motor is going to kill it.
One fact that a lot of people don't consider is that a lot of the 8, 9, and 10 second turbo Hondas use high compression motors.
Now, hear this, even though high compression + boost kicks ass...I still would not tell someone to go out and throw some 12.0:1 pistons in their turbocharged daily driver...simply because most people don't know how to tune well, and it's just not pheasable for a street car. You need awesome tuning, high octane fuel, etc...
But...the stock compression number do not, DO NOT, constitute a problem whatsoever. I was eating Ferarri's in my Civic coupe on 10psi with a stock block B16A, with fuel, ignition, bolt ons, and tuning.