Candles and Mammals

So, some bloke tells me that any old mouse's heart beats about as many times over its life span as my heart will beat over my life span. Is that so, I says. Well, here's how I would have replied if I could mentally access the internet; 

700 Heart beats/minute*60 seconds *24 hours*365 days*2 years =  735,840,000 beats per mouselifespan, assuming aforesaid mouse lives 2 years.

60 Heart beats/minute*60 seconds*24 hours*365 days*100 years = 3,153,600,000 beats per humanlifespan, assuming advances in healthcare comparable to those of the 20th century.

SO, not completely off. Only one order of magnitude, and my heart will only out beat the mouse by a factor of 4.2857.  Unlikely that the rule holds everywhere, and to be honest, my sources (wiki, random animal site) are not the most reputable. But it does make one wonder whether that line from Bladerunner is in point of fact, true for mammals. Quote in question; 

 "The candle that burns twice as bright burns twice as fast." 

After all, we get our energy from the same reaction by which candles burn. 

And some other bloke told me once that the human body releases the same amount of heat as a candle in a given period of time. 

Speaking of which, does anyone want to go see the new edition of Bladerunner with me on the seventeenth at Theatre du Parc?