I dont get what a huge difference there can be between limits

[ChoicestHops]

Compare a 22 to a 55. I dont see how there's a major difference here. People get down to 4-5 handed, and everyone starts stealing blinds and pushing in position. I can safely say they might not play it nearly ICM perfect in a 22, but over a long period of time it is who win's the most 60/40's and coinflips near the bubble which takes a large sample size and luck on you side.

What am I missing here?