Alcohol Stove Performance:

A lot of stove manufacturers tout the performance of their stoves but don't describe the conditions the stoves were tested under. When it comes to testing the performance of any stove it is all about the variables.

Variables include:

Ambient air temperature (The colder the air is then the colder everything is to start out, which includs the pot, the ground, the alcohol, the stove and the water. It just takes more time to heat everything up).
The amount of wind - if any
Use of a wind screen and the amount of distance between the edge of the wind screen and the side of the pot. Wind screens not only block wind but they also reflect heat back to the stove.
Temperature of the water you are attempting to boil (Colder water takes longer to boil)
What the stove is sitting on (a wooden picnic table or the cold hard ground) Use of a reflective primer pan helps reflect heat back to the stove from below improving performance.
Altitude (water boils at a lower temperature at higher altitudes)
Size of the pot. This one works both ways. The larger the pot the longer it takes to heat up. But a pot with a larger bottom has a larger surface area to conduct heat and will heat up faster than a smaller bottomed pot of the same volume.
Pot material - Aluminum is the best conductor of heat and will heat faster than titanium. For ultralight backpacking aluminum and titanium are the top choices.

The criteria we use for stove performance:

Ambient air temperature: 70° F
Wind: 0 mph (all testing takes place in an enclosed area)
Wind screen is used and is approx. 0.5" from the edge of the pot
Water: 16 oz of 65° F tap water
Stove is sitting on the reflector/primer pan sitting on a brick
Altitude is 5000 ft above sea level (Colorado)
For all tests we us a midsize Evernew Titanium 900 ml pot

So unless you use these criteria exactly - your results will be different.