The numbers 802 and 1102 are the dimensions. 8mm width versus 11mm width. Your assumption is probably correct. The question is what kind of power? Is it used for torque or speed?
There MAY be more torque allowing for longer props.
There MAY be more KV allowing for faster props.
The numbers that matter are kv, length of the props, power limits of the ESC and motors, and the lipo cell count (voltage).
I think you are going from 40mm props and 16,000 kv motors on 2s. I think those are the specs you are running now.
If you go to 40mm props and 18,000 kv motors on the same 2s lipo, assuming your ESCs and motors can handle the power, you will see a bump in flight performance at a cost of flight time.
If you go to 60mm props and 12,000 kv motors on the same 2s lipo, assuming your ESCs and motors can handle the torque/power and your frame can handle the additional prop length, you will see a drop in flight performance and an increase of flight time. Note, this one is a blind guess. I don't know that 12,000 kv motors will spin 60mm props fast enough to lift your load. Use
ecalc to be sure.
I have a motorcycle with a 1700cc motor. My buddy has a bike with a 500cc motor. His is WAY quicker off the line. Mine is far more efficient down the stretch. His goes like a rocket across town. Mine cruises at high speed and in comfort across the state.
Your question is one of personal preference like choosing a motorcycle. If you want the cruiser you do torque. If you want the speed demon, you do kv.
It's always a preference based on where and how you fly and it is always a compromise trading performance for time.
Online, I am seeing 1102 motors from 8500 kv (torque) to 18,000 kv (speed). So long as your ESCs can handle the load and your frame can handle the prop lengths, you have TONS of options, which of course is why this is so confusing...
When you buy a copter, all this is figured out for you. When you build one, it gets harder, but is far more rewarding and risky, IMO.
You are asking good questions. It takes some time to grasp all this.
Welcome to the deeper end of the pool.