If it makes it any easier, those hundreds of millions of people are going to die anyway, the only tragedy about it is that it’s from something we could technically prevent or mitigate, but most things are like that… Traffic, smoking, guns, unhealthy diet… The climate changing isnt really going to affect the earth, our short sightedness and ignorance will just make lots of areas we can comfortable live in now much less comfortable or unlivable entirely. It’s going to suck, but do what you can with what you have and just the fact that you know enough to care means you have something to offer.
Basically ‘duty cycle’…same reason electric heaters all put out 1500W but ones for larger rooms are ‘larger’. Big or small, they both put out 1500W, but the small ones can only do it for a few minutes at a time before having to cool off, while the larger ones can run for longer and heat up a big room more quickly.