The first difference arises because annual average temperature change is greater than summer temperature change at high latitudes, but the mass balance sensitivity is greater to summer change. (ipcc.ch)
Global average temperature changed at a rate of up to 4 °C per decade, or 20 times faster than at present. (climatesight.org)
You have not provided any data to support your wild claim that the annual average temperature change has a relationship to the temperature change in extreme events. (realclimate.org)