But again, the bet was on 2015's temperature, why do you think that it matters what 2014's temperature was?
I've explained this to you. Because if you don't get the same result using 1995 and 2014 as your starting point, then there's something wrong with your math.
It's not an either/or situation. To align with the original bet, you
must get the same number when you add 0.4 to the 1995 anomaly and 0.15 to the 2014 anomaly. Both calculations produced the same number in the original bet and there's no mathematically sound reason for that to be any different now -- particularly as we agreed to stick to the original terms of the bet.
I also explained to you how to do the math so that the increases do align.
You have to account for the 0.03 difference that was created when NASA adjusted its current anomalies at
twice the size of the anomalies from the 1990s. Remember, that 0.03 difference between the 1995 adjustment and the 2014 adjustment is
not a temperature increase.
It is failed math to be including that 0.03 difference as a "temperature increase" that counts towards the IPCC's predicted
temperature increases and the temperature increases that we bet on. That 0.03 difference isn't a temperature increase and it doesn't apply (it didn't even exist at the time the IPCC made its predictions).
A simple solution is to simply subtract that 0.03 from NASA's newly reported anomaly for 2015 of 0.87ºC. That would give you a 0.84ºC result against your adjusted bet of 0.86ºC.
But if you want to understand how to get the 1995 increase and the 2014 increase to align, then your solution is to add that 0.03 difference to the 1995 anomaly. That gives you an anomaly that is directly comparable with the numbers as they existed when we made our bet.
Adding that 0.03 difference to the new 1995 anomaly gives you a directly comparable anomaly of 0.49ºC. Add in the 0.4ºC increase from the IPCC prediction and you get a revised bet of 0.89ºC -- the
exact same number you get when you add 0.15ºC to the 2014 anomaly.
If you're going to insist on applying the original bet to the new data, then it definitely "matters" whether or not you're adjusting the numbers properly.
Indeed, you know that's true.
You can quite clearly use data from different sources if you adjust for the different baselines.
Once you stop treating that 0.03 difference as a "temperature increase" (which it wasn't), you'll get your numbers to add up.
Unfortunately for you, once you stop treating that 0.03 difference as a "temperature increase", you'll also be forced to acknowledge that you lost the bet.