I am a little lost, can anybody please tell me what are the average ecs for Ivy league schools and MIT type schools. (more of a doubt than a chance me)

I see some people here who went to Ivy league schools while doing good ecs but nothing extra-ordinary and I also see some people going in the same schools with ecs that are basically like curing cancer. I am an international student (India) and this entire application process thing is a little new to me so I'm quite lost here. I would be really grateful if somebody could help.