To be honest I only know what I’ve read regarding the referenced 1300 RGBW. A few reviews complained the brightness of that bulb is disappointing. I also know the ad states 100W but at 1300 lumens is about equal to a 85 W incandescent. So they stretch the specs
And is seems 1600 lumens is about max for a white A19 LED bulb albeit with some exceptions but certainly not mainstream.
Philips has a "100W equivalent that is 1500 lumens
Cree’s 100W eq is 1600 lumens
Feit 100W eq is 1600 lumens
So I think its “ambitious” to look for a 1600 lumen RGBW and I don’t even know how it would be rated.
I know for different colors the base semiconductor is different and the efficiencies from one to another can be 4:1.
I also know that as current is increased and internal “light” is generated the amount of light that leaves the LED structure drops to the point of diminishing returns.
So to answer your question, in my opinion you won’t see a true 100w RGBW A19 for a while.
I think of it this way:
Today you can buy a number of cars that have 6 cylinder engines producing 200+ HP
Not too long ago that was impossible in a production vehicle. Yes you could do it with special racing parts but not common run of the mill vehicles.
I think 1600 lumen RGBW bulbs are in the pre 200 HP category.