Clearly have no idea what you're talking about. All polishes are compounds of some sort with differing levels of "cut" (meaning how much paint they will remove). I wouldn't advise anyone to use t-cut because it's very aggressive and you'll end up taking away more than what's needed, it's like slicing a loaf of bread with a chainsaw...
Polish doesn't add any layer of protection, that's wax you're on about.
I think any advice about detailing is best kept to yourself until you learn a little (lot) more about it.
Sent from my GT-N7100 with a cracked screen using Tapatalk 2
And your also wrong. Some cut and some fill.
SRP for example is a filler not a cutter!